Several generations of science fiction plots have been set on celestial bodies other than the Earth, with the Moon and Mars being the favorite locations inside the Solar System during in the early decades of the genre. While the Moon and Mars are perennial favorites as locations, fictional planets beyond Sol System predominated as settings in more recent decades.
During the first decades of science fiction Mars was probably the most common extraterrestrial location for science fiction stories because little was known about its surface conditions before the first Mariner space probes. Astronomer Percival Lowell's conviction that he had observed canals on Mars was taken at face value by many and writers like Robert A. Heinlein and Ray Bradbury imagined the red planet as resembling the American Southwest, an arid world with an elder and presumably dying race. In contemporary science, Mars is now depicted primarily as a planet successfully terraformed by authors like John Barnes and Kim Stanley Robinson or as the location for archaeological excavations of alien ruins by authors like Geoffrey A. Landis. During the early-to-mid 20th century Venus was also a popular setting. Earth's sister planet was usually depicted as a warm, wet, jungle-covered and marsh-covered world where life was plentiful, with often thinly-veiled allegories of the European colonization of tropical Africa or Southeast Asia. Subsequent science fiction stories about extrasolar terrestrial planets have tended to continue the tradition of seeing them as either deserts or swamps. Creativity, in short, has been lacking.
Note that the names of planets described in the doctrines of some religious groups, the faux planets in parodies and the hypothetical planets in nonfiction popular science are strikingly similar to names of fictional planets in science fiction.
List of Solar Planets in Science Fiction[]
List of Extrasolar Planets in Science Fiction[]
The following is a list of extra-solar planets, moons and asteroids appearing in science fiction novels, short stories, films, television series and videogames. Moons and asteroids are indicated by (moon) after the named object. Where possible page numbers in the source or series name and date of the television episode together with alternative names are also indicated.
Although the names of many of the gods of classical Greco-Roman religion are employed to name extra-solar worlds, many authors have adopted rough naming conventions that depart significantly from that used in the Sol System to date. The planets named in Isaac Asimov's Foundation series betray a familiarity with the real place names of the ancient Eastern Mediterranean. The planets named in the Star Wars universe often combine consonants un-separated by vowels and vowels un-separated by consonants. The worlds of Star Wars suffer from repetition; for example compare Tatooine, Dantooine, Handooine and Klatooine or compare Dagobah and Xagobah.
Keith Laumer employs the amusingly homespun place naming convention of the American West. Despite the historical example of American states and cities, Canadian provinces and cities, and islands in the South Pacific comparatively few planets are named by placing the words “New” or ‘Nova” before the name of an existing place name in Europe. Charles Stross is the major exception to this generalization.
Most of the planets named by science fiction authors are either clearly very Earth-like or are hostile rocks with thin atmosphere. Planets like the large number of gas giants discovered by astronomers in the last decade are rare. So too are terrestrial planets marginal for human habitation. Terrestrial planets are often designated with a Roman numeral "III" to indicate that they are the third planet from their star, a reflection of the fact that the only known terrestrial world is the third planet from its star.
Extrasolar Planet (or Moon) Name and Source[]
Other[]
- #!@€$!#%& - In-A-Gadda-Da-Leela episode of Futurama June 24, 2010
- 5 Flexitone - M. John Harrison's Empty Space: A Haunting, brief reference, p. 237
- 16 Cygni Bb (a.k.a. Little Warsaw) - James Lovegrove's World of Fire
- A3-T-3019 - John Birmingham's The Cruel Stars
- J4-5-2989 (Batavia) - John Birmingham's The Cruel Stars
A[]
- AF 1963 - Peter David's Blind Man's Bluff a Star Trek: New Frontiers novel
- Abaddon - H. Beam Piper's Space Viking, pp. 218-219
- Abbandanza VI - Robert Silverberg's Unfamilar Territory, a short story in his collection Unfamiliar Territory
- Aberden (planet or moon) - Firefly/Serenity universe
- Abyormen - Hal Clement's Cycle of Fire
- Abregado-rae - Star Wars universe
- Abrogun - Brian W. Aldiss's Starswarm, p. 8
- Abydos (Forest Planet) - John Norman's The Totems of Abydos
- Abydos - "Children of the Gods," Stargate SG-1 Season 1; “Secrets,” Stargate SG-1 Season 2; “Absolute Power,” Stargate SG-1 Season 4; “Full Circle,” Stargate SG-1 Season 6
- Acamar III - "The Vengence Factor," Star Trek: The Next Generation Episode 9, Season 3, 11-20-1989
- Accolon - John C. Wright's Null-A Continuum, p. 52
- Achrady VII - "Captain's Holiday," Star Trek: The Next Generation Episode 11, Season 3, 4-2-1990
- Acquara - "Jeremiah Crichton," Farscape Episode 10114
- Adad a.k.a. Anubelea II - Poul Anderson's Firetime
- Adares - Charles Coleman Finlay's "The Political Prisoner," The Magazine of Fantasy and Science Fiction August 2008
- Adari - Star Wars universe
- Adazir Poul Anderson's short story "The Plague of Masters" in the collection Sir Dominic Flandry: The Last Knight of Terra
- Addams (double planet with Hull) - John Barnes's A Million Open Doors universe
- Adega - Star Wars universe
- Adelphus IV - "Data's Day," Star Trek: The Next Generation Episode 11, Season 4, 1-7-1991
- Aduba III - Star Wars universe
- Adumar - Star Wars universe
- Aedl - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Aegis 7 (Mining Planet) - Dead Space video game
- Aeneas - Poul Anderson's Polesotechnic universe
- Aeroc - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Aeten II (Mining Planet) - Star Wars universe
- Af'El - Star Wars universe
- Agali Vespocci - Adam-Troy Castro's Emissaries From The Dead
- Agander - Donald Kinsbury's Psychohistorical Crisis (set in Asimov's Foundation universe)
- Aganip - Brian W. Aldiss's The Helliconia Trilogy
- Agaron - Christopher L. Bennett's novel Tower of Babel, a Star Trek Enterprise novel
- Aglibol - Chris Roberson's Further: Beyond the Threshold
- Agni - H. Beam Piper's Little Fuzzy
- Agrippa - Poul Anderson's A World Named Cleopatra
- Agora - Doctor Who universe
- Agratis - Doctor Who universe
- Ahnooie-4 - Calvin and Hobbes' Spaceman Spiff planet
- Aimerej - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Ajilon Prime - "...Nor the Battle to the Stong," Star Trek: Deep Space Nine Episode 4, Season 5, 10-21-1996
- Aka — Ursula K. Le Guin's The Telling
- Akdar - Robert Kroese's Starship Grifters'
- Akira - Battle Beyond the Stars 1980 film (see Genocide and the Space Western)
- Akka - Robert A. Heinlein's Citizen of the Galaxy
- Akkht - C.J. Cherryh's The Chanur Saga
- Akritiri - "The Chute," Star Trek: Voyager Episode 43, Season 3, 9-18-1996
- Akyyr - Battle Beyond the Stars 1980 film
- Aladir - "Starfog," a short story in Poul Anderson's collection Beyond the Beyond
- Alalia - Sean Williams's "Inevitable," a short story in The New Space Opera 2
- Alaspin - Alan Dean Foster's The End of the Matter
- Alastria - “Prime Factors,” Star Trek: Yoyager Episode 9, Season 1, 3-2-1995
- Albemarle - Don D. Ammassa's Narcissus, p. 216
- Albian - “Countdown,” Blake’s 7 Episode B9, 3-6-1979
- Alcayd - Robert Holdstock's Eye Among the Blind, p. 198
- Alcor - Raymond E. Jones and Lester Del Rey's Weeping May Tarry
- Alcyone a.k.a. Eta Tauri - “Haven,” Star Trek: The Next Generation Episode 10, Season 1, 11-30-1987
- Aldea - "When the Bough Breaks," Star Trek: The Next Generation Episode 16, Season 1, 2-15-1988
- Aldebaran III - "The Deadly Years," Star Trek: The Original Series Episode 12, Season 2, 12-8-1967
- Aldebaran Three - Mack Reynolds' Planetary Agent X
- Aldebaran - "Where No Man Has Gone Before," Star Trek: The Original Series Episode 1, Season 3, 9-22-1966; brief reference, "Past Tense, Part 1," Star Trek: Deep Space Nine Episode
- Alderaan - Star Wars universe
- Aldo Cerise , a.k.a. Aldo - Keith Laumer's The Return of Retief, The Glory Game
- Alexandria - David Weber's Off Armageddon Reef
- Alfa 177 - “The Enemy Within,” Star Trek: The Original Series Episode 5, Season 1, 10-6-1966
- Algeron IV - "Coming of Age," Star Trek: The Next Generation Episode 18, Season 1, 3-14-1988
- Algol - The Hitchhiker's Guide To The Galaxy
- Algol a.k.a. Beta Persei - “Encounter at Farpoint, Part 1,” Star Trek: The Next Generation Episode 1, Season 1, 9-28-1987
- Algol IV - "That Share of Glory," a short story by C.M. Kornbluth, Astounding, 1952
- Algol VII - Barry N. Malzberg's On A Planet Alien, p. 384
- Algoria – “The Wire,” Star Trek: Deep Space Nine Episode 22, Season 2, 5-8-1994
- Alice (moon of Greene's World) - Elizabeth Bear's Undertow
- Alighieri - James Lovegrove's World of Fire
- Alkon IV - Kurt Heinrich Hyatt's short story The Wheat from the Chaff Raygun Revival. June 1, 2011.
- Allarin - David R. George's Allegiance in Exile, a Star Trek: The Original Series novel, p. 1463
- Allosimanius Syneca (Arctic Planet) - Hitchhiker’s Guide to the Galaxy
- Allray - Elizabeth Moon's Vatta's War series
- Almas - Star Wars universe, Revenge of the Sith
- Alnath II - Robert E. Vardeman's The Klingon Gambit, a Star Trek novel
- α Serpentis - "Slippage City," a short story in Fred Hoyle's collection Element 79
- Alpha (one of three moons of Greentrees) - Nancy Kress's Crossfire
- Alpha-9- The Terrible Thing of Alpha-9 Jake Armstrong. Saturday Morning Cartoons.
- Alpha III - “Court Martial,” Star Trek: The Original Series Episode 20, Season 1, 2-2-1967
- Alpha 177 - "The Enemy Within," Star Trek: The Original Series Episode 5, Season 1, 10-6-1966
- Alpha-441 (planetoid) - “Dreadnaught,” Star Trek: Voyager Episode 17, Season 2, 2-12-1996
- Alpha Aquila IV a.k.a. Altair IV- "Prophet Motive," Star Trek: Deep Space Nine Episode 16, Season 3, 2-20-1995
- Alpha Bengston II, a.k.a. Xavier - Mike Resnick's A Miracle of Rare Resign
- Alpha C IV - Robert Silverberg's Revolt on Alpha C
- Alpha Carinae II - "The Ultimate Computer," Star Trek: The Original Series Episode 24, Season 2, 3-8-1968
- Alpha Carinae V - "Wolf in the Fold," Star Trek: The Original Series Episode 14, Season 2, 12-22-1967
- Alpha Centauri – “Past Tense, Part 1,” Star Trek: Deep Space Nine Episode 11, Season 3, 1-2-1995
- Alpha Centauri B II (a.k.a. Haven; a.k.a. Ramachandra's World) - Chris Roberson's Further: Beyond the Threshold
- Alpha Centauri IV (Lewis Colony) - John Vornholt's Masks, a Star Trek: The Next Generation novel, p. 5
- Alpha Cygnus IX a.k.a. Deneb IX - “Sarek,” Star Trek: The Next Generation Episode 23, Season 3, 5-14-1990
- Alpha Leonis a.k.a. Regulus - “The Vengeance Factor,” Star Trek: The Next Generation Episode 9, Season 2, 11-20-1989
- Alpha Majoris I - “Wolf in the Fold,” Star Trek: The Original Series Episode 14, Season 2, 12-22-1967
- Alpha moon, Peliar Zel - “The Host,” Star Trek: The Next Generation Episode 23, Season 4, 5-13-1991
- Alpha Omicron VII (Gas Giant) - “Galaxy’s Child,” Star Trek: The Next Generation Episode 14, Season 4, 3-11-1991
- Alpha Onias III - “Future Imperfect,” Star Trek: The Next Generation Episode 8, Season 4, 11-12-1990
- Alpha Proxima II - “Wolf in the Fold,” Star Trek: The Original Series Episode 14, Season 2, 12-22-1967
- Alpha Site (P3X-984 & P4X-650) - Stargate: SG1 universe
- Alpha V – “Charlie X,” Star Trek: The Original Series Episode 2, Season 1, 9-15-1966
- Alphard (Ocean Planet) - Charles Henneberg's "The Blind Pilot," a short story in Damon Knight's collection 13 French Science Fiction Stories
- Alra-kae - Timothy Zahn's Night Train to Rigel, brief reference
- Alrond - Christopher L. Bennett's novel Tower of Babel, a Star Trek Enterprise novel
- Altai - Poul Anderson's Flandry of Terra
- Altair (P3X-989) - Stargate: SG1 universe
- Altair III - "Encounter at Farpoint, Part 1" Star Trek: The Next Generation Episode 1, Season 1, 9-28-1987
- Altair IV a.k.a. Alpha Aquila IV - "Prophet Motive," Star Trek: Deep Space Nine Episode 16, Season 3, 2-20-1995
- Altair-4 - Forbidden Planet
- Altair 4 - James Blish's The Triumph of Time, p. 470, Cities in Flight universe
- Altair VI - "Amok Time," Star Trek: The Original Series Episode 1, Season 2, 9-15-1967
- Altar 1 - Galaxina 1980 film
- Alteria – “Armageddon Game,” Star Trek: Deep Space Nine Episode 13, Season 2, 1-30-1994
- Alterra - Ursula K. Le Guin's Left hand of Darkness, p. 35
- Altora – “Vortex,” Star Trek: Deep Space Nine Episode 11, Season 1, 4-18-1993
- Alzarius - Doctor Who universe
- Alzoc III - Star Wars universe
- Amador - Babylon 5 universe
- Amaterasu - H. Beam Piper's Space Viking
- Amazon - UFO Report from the British Ministry of Defence BBC News Report
- Amazonia - "Amazon Women in the Mood," Futurama Volume 3, Episode 1
- Amazonia - Mack Reynolds' Planetary Agent X
- Ambo Danse - M. John Harrison's Empty Space: A Haunting, brief reference p. 95
- Ambria (Desert Planet) - Star Wars universe
- Ament Cour - John Scalzi's The God Engines
- American Diner - M. John Harrison's Empty Space: A Haunting, brief reference p. 95
- American Nosebleed - M. John Harrison's Empty Space: A Haunting, brief reference p. 95
- American Polaroid - M. John Harrison's Empty Space: A Haunting, brief reference p. 95
- Amerind Planet - “The Paradise Syndrome,” Star Trek: The Original Series Episode 3, Season 3, 19-4-1968
- Amerind - Tony Daniel's Devil's Bargain, a Star Trek: The Original Series novel, pp. 23-24
- Amish Home World - "The Haunting of Philip J. Fry" episode of Futurama, June 30, 2011
- Amleth Prime - “Return to Grace,” Star Trek: Deep Space Nine Episode 13, Season 4, 2-5-1996
- Ammuud - Star Wars universe
- Amphibios 9 (Kip's home planet) - Futurama universe
- Anacona - Peter F. Hamilton's Pandora's Star
- Anacreon A I (a.k.a. Agamemnon) - Isaac Asimov's Foundation universe
- Anacreon A II (a.k.a. Anacreon) - Isaac Asimov's Foundation universe
- Anacreon A III (a.k.a. Meneleus) - Isaac Asimov's Foundation universe
- Anacreon A IV (a.ka. Achilles) (Gas Giant) - Isaac Asimov's Foundation universe
- Anacreon A IVa (moon) (a.k.a. Neoptolemus) - Isaac Asimov's Foundation universe
- Anacreon A IVb (a.k.a. Ulysses) - Isaac Asimov's Foundation universe
- Anacreon A V (a.k.a. Priam) (Gas Giant - Isaac Asimov's Foundation universe
- Anacreon A Va (moon) (a.k.a. Hecate) - Isaac Asimov's Foundation universe
- Anacreon A Vb (moon) (a.k.a. Hector) - Isaac Asimov's Foundation universe
- Anacreon A VI (a.k.a. Helen) (Gas Giant) - Isaac Asimov's Foundation universe
- Anacreon B I - Isaac Asimov's Foundation universe
- Anacreon B IIa (moon) - Isaac Asimov's Foundation universe
- Anacreon B III - Isaac Asimov's Foundation universe
- Anahita - Sean Williams' Saturn Returns
- Anarres (moon)- Ursulla K. LeGuin's The Dispossessed
- Anathema - Doctor Who universe
- Anaxes - Star Wars universe
- Andevin (moon) - “The Forsaken,” Star Trek: Deep Space Nine Episode 16, Season 1, 5-23-1993
- Andat - Babylon 5 universe
- Andevian II - “The Forsaken,” Star Trek: Deep Space Nine Episode 16, Season 1, 5-28-1993
- Ando (Ocean Planet) - Star Wars universe
- Andor a.k.a. Andoria – “Prophet Motive,” Star Trek: Deep Space Nine Episode 16, Season 3, 2-20-1995
- Andoria a.k.a. Andor – “Prophet Motive,” Star Trek: Deep Space Nine Episode 16, Season 3, 2-20-1995
- Andrecia - Sylvia Louise Engdahl's Enchantress from the Stars
- Andriad - Harry Harrison's short story "The Pliable Animal" in his collection 50 in 50
- Andromina - Andromina: The Pleasure Planet 1999 film
- Andros a.k.a. Bajor VIII – “Past Prologue,” Star Trek: Deep Space Nine Episode 2, Season 1, 1-10-1993
- Androzani Major (double planet with Androzani Minor - "The Caves of Androzani," episode of Doctor Who
- Androzani Minor (double planet with Androzani Major - "The Caves of Androzani," episode of Doctor Who
- Aneth (home planet of the Anethans) - "The Horns of Nimon," episode of Doctor Who
- Anfogen - John Brunner's Interstellar Empire, p. 221
- Angel (planet or moon) - Firefly/Serenity universe
- Angel One (Matriarchy Planet) - "Angel One," Star Trek: The Next Generation Episode 13, Season 1, 1-25-1988
- Angslan - L.E. Modesitt's The Ethos Efect
- Angosia II - “The Hunted,” Star Trek: The Next Generation Episode 11, Season 3, 1-8-1990
- Angvia - Zeta One 1969 film
- Ankheny - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Annanworld - John Brunner's Interstellar Empire
- Anoat - Star Wars universe
- Anodunos - Ultima Underworld II: Labyrinth of Worlds video role playing game
- Anshun - Peter F. Hamilton's Pandora's Star
- Antalin - Doctor Who universe
- Antar - Star Wars universe
- Antar 4 (moon orbiting the Gas Giant Antar) - Star Wars Universe
- Antares - Babylon 5 Universe
- Antares - Sumuru 2003 film
- Anteevy - Star Wars Universe
- Anthea - Walter Tevis' The Man Who Fell to Earth
- Planet Antheon - "Counterweight" episode of the Outer Limits, 1963.
- Antica (Beta Renna star system) - "Lonely Among Us," Star Trek: The Next Generation Episode 6, Season 1, 11-2-1987
- Antide - “Manhunt,” Star Trek: The Next Generation Episode 19, Season 2, 6-19-1989
- Antioch - Richard Paul Russo's Ship of Fools
- Antony - Poul Anderson's A World Named Cleopatra
- Antos 4 - "Whom Gods Destroy," Star Trek: The Original Series, Episode 71, Season 3, January 3, 1969
- Anuurn - C.J. Cherryh's The Chanur Saga
- Anvhar (Arctic Planet) - Harry Harrison's Planet of the Damned
- Anvil - “And If They Lay Us Down to Rest…” Space: Above and Beyond (SE-123, Parts 1 & 2), May 26, 1996
- Anzen - Elizabeth A. Lynn's A Different Light
- Aotearoa - M.R. Meluch's The Ninth Circle
- Ap (one of 7 moons of World) - Nancy Kress's Probability Moon
- Apella - Skipping Stones a short story by Devin Miller at Daily Science Fiction
- Aplu (Gas Giant) - David L. Clements' "A War of Stars" short story in Analog January/February 2010
- Apollo - Richard Paul Russo's Inner Eclipse, brief mention p. 55
- Apollo 4, a.k.a. Norn - Larry Niven's Destiny's Road
- Appelobetnees III - Brian W. Aldiss's Bow Down to Nul
- Aquari III - David Conyers and David Kernot's short story "Petrochemical Skies" in David Conyers et al.'s collection Extreme Planets
- Aquaterra - Bikini Girls from the Lost Planet 2006 film
- Aquitar (Ocean Planet) - Power Rangers television series
- Aquifer - Ian Stewart and Jack Cohen's Heaven, p. 209
- Arachna - Vernor Vinge's A Deepness in the Sky
- Aradia - Robert A. Heinlein & Spider Robinson's Variable Star, brief reference p. 289
- Arcadia (a.k.a. Eridani Epsilon II) - Poul Anderson's short story "Dialogue" in his collection Dialogue With Darkness
- Aragon - Don D'Ammassa's Haven
- Aramand - Star Wars universe
- Aramen - Jim Grimsley's The Last Green Tree
- Arania - Michael P. Kube-McDowell's novel Exile
- Arawath - “The Wire,” Star Trek: Deep Space Nine Episode 22, Season 2, 5-8-1994
- Arbazan - “The Search, Part II,” Star Trek: Deep Space Nine Episode 2, Season 3, 10-3-1994
- Arbra - Star Wars universe
- Arcadia - Soldier 1998 film
- Arcadia - Deceit, a Doctor Who universe novel
- Arcadia - Ruse, a Sigilverse comic book series
- Arcady - Norman Spinrad's The Void Captain's Tale, p. 11
- Archanis – “Arena,” Star Trek: The Original Series Episode 18, Season 1, 1-19-1967
- Archanis IV – “Day of the Dove,” Star Trek: The Original Series Episode 7, Season 3, 11-1-1968
- Archer IV – “Yesterday’s Enterprise,” Star Trek: The Next Generation Episode 15, Season 3, 2-19-1990
- Archanon - “The Mark of Archanon,” Space: 1999 Episode 8, Season 2, 10-16-1976
- Archeopia - Galactus
- Archimedes - Mack Reynolds' Planetary Agent X
- Arcon - Rex Gordon's The Yellow Fraction
- Arcturas - James Strong's Flight to the Stars
- Arcturas III - Chad Oliver's "North Wind," a short story in William F. Nolan's collection A Wilderness of Stars
- Arcturas IV - Babylon 5 universe
- Ardamador II - John Clute's Appleseed, brief reference, p. 223.
- Ardana - "The Cloud Minders," Star Trek: The Original Series Episode 74, Season 3, 2-28-1969
- Arden - Shadowmind, a Doctor Who universe novel
- Ardana – “The Cloud Minders,” Star Trek: The Original Series Episode 21, Season 3, 2-18-1969
- Ardazir - Poul Anderson's We Claim These Stars, p. 44 and the short story "Hunters of the Sky Cave" in the collection Sir Dominic Flandry: The Last Knight of Terra
- Ardena - Stargate: SG1 universe
- Ares - Firefly/Serenity universe
- Arete 61 Virginis system) - Marguerite Reed's novel Archangel, p. 89
- Arethusa (a.k.a. Nereus II) - Clayton Ward and Kevin Dilmore's Star Trek: The Original Series universe novel Point of Divergence
- Argabuthon - Hitchhiker’s Guide to the Galaxy
- Argellius II - "Wolf in the Fold," Star Trek: The Original Series Episode 36, Season 2, 12-22-1967
- Argos (P3X-8596) - "Brief Candle," Stargate SG*1 universe
- Argos – “Babel,” Star Trek: Deep Space Nine Episode 4, Season 1, 1-24-1993
- Argolis - "The Leisure Hive," episodes of Doctor Who
- Argolis Moon (Terrestrial Moon) – “I, Borg,” Star Trek: The Next Generation Episode 23, Season 5, 5-11-1992
- Argus - John Brunner's Interstellar Empire
- Argus II (Desert Planet) - James Blish's Cities in Flight universe
- Argus III - James Blish's Cities in Flight universe
- Argus IV (Arctic Planet) - James Blish's Cities in Flight universe
- Argus V, a.k.a. Treetrunk - Alan Dean Foster's Dirge
- Argyth - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Ariannus – “Let That Be Your Last Battlefield,” Star Trek: The Original Series Episode 15, Season 3, 1-10-1969
- Arias – “Caretaker, Part 1,” Star Trek: Voyager Episode 1, Season 1, 1-16-1995
- Arice - Stan Johnson and Joshua Shapiro's (nonfiction) The True Story of Bigfoot
- Aridius (Desert Planet and former Ocean Planet) - “The Chase,” Doctor Who Season 2, Story Number 16
- Ariel - “The Last Sunset,” Space: 1999 Episode 11, Season 1, 1-1-1976
- Ariel - Firefly/Serenity universe
- Aries - Unarius (UFO Religion)
- Arieska - China Miéville's Embassytown
- Aris Colony - Babylon 5 universe
- Arisia 3 - Babylon 5 universe
- Ark - Samuel R. Delaney's Nova, brief reference
- Arkadia – “The Testament of Arkadia,” Space: 1999 Episode 24, Season 1, 2-12-1976
- Arkaria (site of Arkaria base) – “Starship Mine,” Star Trek: The Next Generation Episode 18, Season 6, 3-29-1993
- Arkinfoodle Minor - The Hitchhiker's Guide To The Galaxy
- Arloff IX - "The Neutral Zone," Star Trek: The Next Generation Episode 25, Season 1, 5-16-1988 description
- Armaghast - Dan Simmons’s Hyperion, p. 27; Hyperion Cantos
- Armazin - Donald Kinsbury's Psychohistorical Crisis (set in Asimov's Foundation universe)
- Armis IX – “Angel One,” Star Trek: The Next Generation Episode 13, Season 1, 1-25-1988
- Arous - The Brain from Planet Arous 1957 film
- Arrakis a.k.a. Rakis - Frank Herbert's Dune series
- Arrawd - Alan Dean Foster's Running from the Diety
- Arruckus - Ellis Weiner's National Lampoon's Doon
- Artemis - Jane Lindskold's Artemis Awakening
- Arthur (moon of Greene's World) - Elizabeth Bear's Undertow
- Artifactovol - The Hitchhiker's Guide To The Galaxy
- Arvada III – “The Arsenal of Freedom,” Star Trek: The Next Generation Episode 20, Season 1, 4-11-1988
- Arwy - Poul Anderson's World Without Stars, brief reference
- Arzor - Andre Norton's The Beast Master
- Asagarth (Gas Giant) - Colin Harvey's Winter Song
- Asborg - Poul Anderson's For Love or Glory
- Aschen (P4C-970) - Stargate SG1 universe
- Asconel - John Brunner's Interstellar Empire
- Aschelan V - "Dreadnaught," Star Trek: Voyager Episode 34, Season 2, 2-12-1996
- Asgard - C.J. Cherryh's The Faded Sun trilogy
- Asgard - "The Shadow of Space," a short story in Philip Jose Farmer's Down in the Black Gang
- Asgard - Colin Harvey's Winter Song
- Asgard - David Weber's On Basilisk Station, Honorverse
- Askone - Isaac Asimov's Foundation
- Aslund - Lois McMaster Bujold's Vorkosigan Saga
- Aspahan - Matthew Hughes's Magestrum, Magestrum universe
- Asperta - Isaac Asimov's Foundation and Empire
- Asquith - Dan Simmons’s Hyperion, p. 210
- Assmazzara - Star Trek: The Motion Picture
- Astervillius - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Astra - Andre Norton's Star Flight
- Asuras - Stargate Atlantis universe
- Atab Abas - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Atheling's World - Colin Harvey's Winter Song
- Atielle (Terrestrial Moon) - Jennifer Foehner Wells's Fluency
- Atlantea Ocean Planet - Maya Kathyrn Bohnhoff's short story "Simple Gifts" Analog January/February 2010
- Atlantis (Ocean Planet) — Peter F. Hamilton's The Night's Dawn Trilogy
- Athens - Firefly/Serenity universe
- Atheria – “Collision Course,” Space: 1999 Episode 13, Season 1, 9-18-1975
- Athos - Lois McMaster Bujold's Ethan of Athos
- Atifs IV – “Manhunt,” Star Trek: The Next Generation Episode 19, Season 2, 6-19-1989
- Atlast - David Brin's Startide Rising p. 50
- Atlec (orbiting Omega Sagitta) - “The Outrageous Okona,” Star Trek: The Next Generation Episode 4, Season 2, 12-12-1988
- Atoma - Captain Video cinema serial, Columbia, 1951.
- Aton - H. Beam Piper's Space Viking
- Ator - Star Wars universe
- Atrea IV – “The Gambit, Part 1,” Star Trek: The Next Generation Episode 4, Season 7, 10-11-1993
- Atrios - "The Armageddon Factor," episodes of Doctor Who
- Audet IX - "The Child," Star Trek: The Next Generation Episode 1, Season 2, 11-21-1988
- Auclaire IV - Keith Laumer's The Glory Game, brief reference
- Auclaire V - Keith Laumer's The Glory Game, brief reference
- Audhumla - H. Beam Piper's Space Viking
- Augusta - Peter F. Hamilton's Pandora's Star
- Aura - Planet of the vampires 1965 film
- Aurianta - Michael Berlyn's The Eternal Enemy
- Auriga B - John Lovegrove's World of Fire
- Auron - “Children of Auron,” Blake’s 7 Episode C7, 2-18-1980
- Aurora - Isaac Asimov's The Caves of Steel, brief reference in The Naked Sun
- Avalon - Poul Anderson's Dominic Flandry universe, for example his short story "A Knight of Ghosts and Shadows," in the collection Sir Dominick Flandry: The Last Knight of Terra
- Avalon - Nancy Kress's Crossfire
- Avalon - Colin Harvey's Winter Song
- Avalon a.k.a. Tau Ceti 3 - Larry Niven's Destiny's Road; Larry Niven, Jerry Pournelle and Steven Barnes's Beowulf's Children
- Avalon - Mack Reynolds' Planetary Agent X and Amazon Planet
- Avery III - "Faces," Star Trek: Voyager, Episode 13, Season 1, 5-8-1995
- Axista Four - Doctor Who universe
- Axum - Star Wars universe
- Axxila - Star Wars universe
- Ayisha (moon of Babur) - Poul Anderson's Mirkheim
- Azanry - Susan Matthews's The Devil and Deep Space
- Azbrian - Star Wars universe
- Aznir - Susan Matthews's The Devil and Deep Space
- Azoll - Keith Laumer's The Return of Retief, brief reference, p. 99
- Azoviton 6 - Michele Dutcher's "Storm Chaser," Aphelion, Issue 122, Vol. 12, June 2008.
- Azure - "Nightmare of Eden," episodes of Doctor Who
B[]
- BP6-3Q1 – “Bane,” Stargate SG-1 Season 2
- Baal's Outpost (P3S-114) - Stargate SG-1 universe
- Babel (Neutral Planet) - "Journey to Babel," Star Trek: The Original Series Episode, 44, Season 2, 11-17-1967.
- Babalu 4 - Ellis Weiner's National Lampoon's Doon
- Babur (orbits the star Mogul) - Poul Anderson's Mirkheim
- Bachman - L.E. Modesitt, Jr.'s The One-Eyed Man
- Back Alley IV - Mike Resnick's short story "Catastrophe Bakers and a Canticle for Liebowitz" in The New Space Opera 2
- Bajor – Star Trek: Deep Space Nine
- Bajor VIII a.k.a. Andros – “Past Prologue,” Star Trek: Deep Space Nine Episode 2, Season 1, 1-10-1993
- Bakura - Star Wars universe, esp. Kathy Tyers The Truce at Bakura
- Bachwazi - Derek Künsken's novel Quantum Magician, p. 422
- Bal (a.k.a. Baluse) - Lloyd Biggle Jr.'s The Rule of the Door
- Balaban - Matthew Hughes's The Spiral Labyrinthe, Majestrum trilogy
- Bal'demnic - Star Wars universe
- Balder - Norman Spinrad's The Men in the Jungle, brief reference, p. 25
- Baldur - H. Beam Piper's Space Viking and H. Beam Piper's Little Fuzzy, brief reference p. 6
- Balgut IV - "Memory," a short story in Poul Anderson's collection Beyond the Beyond, p. 24
- Balkast - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Ballanchine Twelve - Robert Kroese's Starship Grifters, p. 120
- Balos - Deathwalker, an episode of Babylon 5, 4-20-1994
- Balosnee IV (Vacation Planet) – “The Nagus,” Star Trek: Deep Space Nine Episode 10, Season 1, 3-21-1993
- Balthus - Samuel R. Delaney's Nova, brief reference
- Balzad IV - "A large on a Small Planet," Episode of Buzz Lightyear of Star Command animated television series
- Bandicoot (Gas Giant) - Ian Stewart and Jack Cohen's Heaven, brief reference, p. 20
- Bandomeer - Star Wars universe, Jude Watson and Dave Wolverton's Jedi Apprentice
- Bandraginus 5 - "The Pirate Planet," episodes of Doctor Who
- Banea – “Ex Post Facto,” Star Trek: Voyager Episode 7, Season 1, 2-27-1995
- Banya Ban - Brian Aldiss's Starswarm, p. 87
- Bardakia – “Emissary, Part 1,” Star Trek: Deep Space Nine Episode 1, Season 1, 1-3-1993
- Bandril (Bandril home planet) - "Timelash," episodes of Doctor Who
- Barassa - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Barcelona - "The Parting of the Ways," episode in Season 27 of Doctor Who, brief reference
- Bareimus II - Mike Resnick's A Miracle of Rare Resign
- Barents - Margaret Ball's Disappearing Act
- Barissa Prime - “The Adversary,” Star Trek: Deep Space Nine Episode 26, Season 3, 6-19-1995
- Barkon IV – “Thine Own Self,” Star Trek: The Next Generation Episode 16, Season 7, 2-14-1994
- Baronn - Isaac Asimov's Pebble in the Sky
- Barnesworld - James Lovegrove's World of Fire, Pp. 172-173
- Barnum - Ron Goulart's Clockwork Pirates
- Barrayar - Lois McMaster Bujold's Vorkosigan Saga
- Barrazan Two - Phyllis Gottlieb's O Master Caliban
- Barrazan Three - Phyllis Gottlieb's O Master Caliban, brief reference p. 171
- Barrazan Four - Phyllis Gottlieb's O Master Caliban
- Barrazan Five (Dahlgren's World) - Phyllis Gottlieb's O Master Caliban and Mindworlds, p. 132
- Barlow's Planet - Tony Daniel's Star Trek: The Original Series novel Savage Trade, p. 114
- Barter Nine a.k.a. Goldblatt's World - Keith Laumer's The Return of Retief, Pp. 67-70, 117
- Basel Dove - M. John Harrison's Empty Space: A Haunting, p. 156
- Bastille (Prison Planet) - "Prisons," a short story in Kevin J. Anderson's colelction Landscapes.
- Bastion - Star Wars universe
- Batavia (J4-5-2989) - John Birmingham's The Cruel Stars
- Bathyos (Ocean Planet) - Buzz Lightyear of Star Command
- Baugenphyme (sulphur Desert Planet) - Ian Stewart and Jack Cohen's Heaven (SF novel), brief reference, p. 20
- Bavarya - Mack Reynolds's Mission to Horatius, a Star Trek: The Original Series) novel
- Beachworld - "Beachworld," a short story in Stephen King's collection Skeleton Crew
- Bear (47 Ursae Majoris 3) - Allen Steele's Coyote Rising
- Beaumonde - Firefly/Serenity universe
- Bedrosia (a.k.a Optrica or P2X-416) – “New Ground,” Stargate SG-1 Season 3
- Bel II a.k.a. Ishtar, a.k.a. Anubelea III - Poul Anderson's Firetime
- Bel-Nar - Babylon 5
- Belgaroth - Star Wars universe
- Ben Nauk - Greg Bear's Cryptum: The Forernner Saga (Halo universe)
- Bergerac (moon) - L.E. Modesitt, Jr.'s The Elysium Commission
- Belkadan (location of outpost ExGal 4) - Star Wars universe
- Bell's World - Richard Paul Russo's Inner Eclipse, pp. 99, 301
- Bellassa - Star Wars universe
- Bellerophon - Firefly/Serenity universe
- Belletrix IV - Samuel R. Delaney's Nova, brief reference
- Bellis - Timothy Zahn's The Third Lynx
- Bellus - When Worlds Collide 1951 film
- Beltran Prime - Robert Kroese's Aye Robot: A Rex Nihilo Adventure
- Belu - "Edward Wellen's "These Our Actors," a short story in Robert Hoskin's collection Infinity One
- Belzagor a.k.a. Holman's World - Robert Silverberg's Downward to the Earth
- Beltane IX - "Coming of Age," Star Trek: The Next Generation Episode 18, Season 1, 3-14-1988 description
- Bembo - John Kessel's short story "Events Preceding the Helvetican Renaissance," in The New Space Opera 2
- Benecia Colony - "Turnabout Intruder," Star Trek: The Original Series Episode 79, Season 3, 6-3-1969
- Bent’s World – Dan Simmons’s Hyperion, brief reference p. 140
- Benzar - "Coming of Age," Star Trek: The Next Generation Episode 18, Season 1, 3-14-1988 description
- Beowulf - David Weber's On Basilisk Station, Honorverse
- Beowulf - H. Beam Piper's Space Viking
- Bephis - Ian McDonald's "The Tear," a short story in Gardner Dozois' collection Galactic Empires
- Berchest (location of Calius saj Leeloo) - Star Wars universe
- Berengaria VII (also Bering Deria 7) – “The Side of Paradise,” Star Trek: The Original Series Episode 24, Season 1, 3-2-1967
- Bernadette - Firefly/Serenity universe
- Bernard’s World - Dan Simmons’s Hyperion, Pp. 246-247
- Bersallis III – “Lessons,” Star Trek: The Next Generation Episode 19, Season 6, 4-5-1993
- Beser'ez - Karen Traviss' Wess'har Wars universe
- Bespin (Gas Giant location of Cloud City) - Star Wars Episodes V and VI
- Bessan - Doctor Who universe
- Bestine IV - Star Wars universe
- β Orionis - "Slippage City," a short story in Fred Hoyle's collection Element 79
- Beta (one of three moons of Greentrees) - Nancy Kress's Crossfire
- Colony Beta 6 - "The Squire of Gothos," Star Trek: The Original Series Episode 18, Season 1, 1-12-1967, brief reference
- Beta 9 - Babylon 5 universe
- Beta 12 - Babylon 5 universe
- Earth Colony Beta 12 A - "Day of the Dove," in Star Trek: The Original Series Episode 66, Season 3, 11-1-1968
- Beta Agni II – “The Most Toys,” Star Trek: The Next Generation Episode 22, Season 3, 5-7-1990
- Beta Andromedae XII - Robert Silverberg's short story "Prime Commandment"
- Beta Antares IV – “A Piece of the Action,” Star Trek: The Original Series Episode 17, Season 2, 1-12-1968
- Beta Colony - Lois McMaster Bujold's Vorkosigan Saga
- Beta Li'odo - Howard Weinstein's Power Hungry (Star Trek: The Next Generation novel), brief reference p. 20
- Beta Moon, Peliar Zel - “The Host,” Star Trek: The Next Generation Episode 23, Season 4, 5-13-1991
- Beta Persei a.k.a. Algol - “Encounter at Farpoint, Part 1,” Star Trek: The Next Generation Episode 1, Season 1, 9-28-1987
- Beta Portalin - "Operation Annihilate!" Star Trek: The Original Series Episode 29, Season 1, 4-13-1967
- Beta Phyxis III (a.k.a. Phoenix) - John Scalzi's Old Man's War
- Betazed – Star Trek; Keith R.A. Decandido's Star Trek: A Time for War, A Time for Peace
- Beta Site (P3X-984) - Stargate SG-1 universe
- Betelgeuse - Hitchhiker's Guide to the Galaxy
- Betelgeuse - Spaced Out 1979 film
- Betelgeuse 4 - John Vornholt’s Blood Oath (Babylon 5 novel)
- Betelgeuse 5 - Hitchhiker’s Guide to the Galaxy
- Betelgeuse 6 - John Vornholt’s Voices (Babylon 5 novel)
- Betelgeuse 7 - Hitchhiker’s Guide to the Galaxy
- Betelgeuse VII - Stephen Colbert’s Alpha Squad 7: Lady Nocturne: A Tek Jansen Adventure, Chapter 26
- Betelgeuse IX - William Tenn's "Betelgeuse Bridge," a short story in Robert A. Heinlein's Tomorrow the Stars
- Betha - “The Last Enemy,” Space: 1999 Episode 18, Season 1, 2-19-1976
- Bethselamin - Hitchhiker’s Guide to the Galaxy
- Betrushia - St Anthony's Fire, Doctor Who novel
- Beylix - Firefly/Serenity universe
- Bharini - Geetanjali Dighe's short story "Living With Trees" Daily Science Fiction, February 25, 2013
- Bharis - David Brin's "The Other Side of the Hill," a short story in Tomorrow Happens, Deb Geisler, ed.
- Bifrost - "Landscapes," a short story in Kevin J. Anderson's collection Landscapes
- Bifrost - Colin Harvey's Winter Song
- Big Ben - Peter Watts's 'Blindsight
- Big Rock (moon of the planet Prute) - Keith Laumer's The Return of Retief
- Bija'dom - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Bilana II – “New Ground,” Star Trek: The Next Generation Episode 10, Season 5, 1-6-1992
- Bilbringi - Star Wars universe
- Bildunsrunia - Evan Mandery's First Contact: Or, Its Later Than You Think. p. 45
- Bille - Matthew Hughes's The Spiral Labyrinthe, Majestrum trilogy
- Bimmiel - Star Wars universe
- Bimmisaari - Star Wars universe
- Binary (SF planet) - "At the Core," a short story in Larry Niven's Neutron Star
- Binder (terrestrial moon) - Jenny Ogiwara and the AntiFems a short story by Gary W. Feat in Aphelion 14, 145 July-August 2010
- Binipinardia - Buzz Lightyear of Star Command cartoon
- Bishop's Call - John Scalzi's The God Engines
- Bizmant's World - Matthew Hughes's Magestrum, Magestrum universe
- Blackguard - Erik M. Roth's "Blackguard's Finest," a short story in Aphelion, 1999.
- Blackstrap - Keith Laumer's Retief and the Warlords, Pp. 140, 173
- Blargon 7 - "The One With the Screamer," 'Friends television comedy series Episode 322
- Blasusarr - Alan Dean Foster's Humanx Commonwealth
- Blaylock B - Charles Stross’s 'Iron Sunrise, Pp. 24-25
- Blenjeel - Star Wars universe
- Blessed - Robert A. Heinlein's Time Enough for Love
- Blimminery - James Patrick Kelly's Burn, p. 18
- Blodgett - Harry Harrison's The Stainless Steel Rat for President
- Blorch - Invader Zim cartoon series
- Blue - Alexis Glynn Latner's Hurricane Moon
- Blue Moon - Keith Laumer's Retief and the Warlords
- Blue World - Robert Reed's The Well of Stars
- BlueSky VI - John Scalzi's Fuzzy Nation
- Blythe System - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Boadacea James Blish's short story "A Style in Treason" in Galaxy June 1970
- Bocai - Adam-Troy Castro's Emissaries From The Dead
- Bofors - Keith Laumer's The Glory Game, brief reference
- Bog - Calvin and Hobbes' Spaceman Spiff planet
- Bog - Maya Kathyrn Bohnhoff's short story "Simple Gifts" Analog January/February 2010
- Bogden - Star Wars universe
- Bohraj - Charles Stross’s Iron Sunrise, p. 72
- Boj - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Bolarus IX – “Allegiance,” Star Trek: The Next Generation Episode 18, Season 3, 3-26-1990; Keith R.A. Decandido's Star Trek: A Time for War, A Time for Peace; David Mack's novel A Time to Kill
- Boodie Nen - Invader Zim cartoon series
- Boondock IV - Keith Laumer's Retief and the Pangalactic Pageant of Pulchritude, brief reference, p. 14
- Bonadan - Star Wars universe
- Bonde (SF planet) - Isaac Asimov's Foundation and Empire
- Bonnburg - Scott Westerfeld's The Risen Empire, brief reference
- Bopak II – “Hippocratic Oath,” Star Trek: Deep Space Nine Episode 3, Season 4, 10-16-1995
- Boraal II – “Homeward,” Star Trek: The Next Generation Episode 13, Season 7, 1-17-1994
- Boradis III - "Wolf in the Fold," Star Trek: The Original Series Episode 36, Season 2, 12-22-1967
- Boradis III – “The Emissary,” Star Trek: The Next Generation Episode 20, Season 2, 6-29-1989
- Boreal III – “Silicon Avatar,” Star Trek: The Next Generation Episode 4, Season 5, 10-14-1991
- Borealis - Star Wars universe
- Boreth (Klingon sacred world) - Star Trek universe
- Borka VI – “Face of the Enemy,” Star Trek: The Next Generation Episode 14, Season 6, 2-8-1993
- Bornok - "Heirloom," a short story bu Norman Spinrad in his collection No Direction Home
- Boros - Firefly/Serenity universe
- Borthal's World - Sheri S. Tepper's Shadow's End
- Bortresoye - "The Creed of the Kromon," episodes of Doctor Who
- Boslic – “The Homecoming,” Star Trek: Deep Space Nine Episode 1, Season 2, 9-26-1993
- Botany — Anne McCaffrey's Catteni Series
- Bothawui (Bothawui Proper) - Star Wars universe
- Boudeuse - M. John Harrison's Empty Space: A Haunting, p. 79
- Boz Pity (Burial Planet) - Star Wars universe
- Bozlen Two - Iain M. Banks's Consider Phlebas
- Bpflash - Star Wars universe
- Braah (home planet of the Ogrons) - "Frontier in Space" episodes of Doctor Who
- Braciola - Orion's Arm-Encyclopedia Galactica
- Bradley's World - Robert Silverberg's "The Pleasure of Your Company," a short story in Robert Hoskin's collection Infinity One
- Bracas V – “The Loss,” Star Trek: The Next Generation Episode 10, Season 4, 12-31-1990
- Braggi - H. Beam Piper's Space Viking, p. 202
- Brain Slug Planet - Futurama
- Brasil Novo (Immega 714 2) a.k.a. Bravo, a.k.a. Peekaboo Two - Robert A. Heinlein & Spider Robinson's Variable Star
- Braun's World - Una McCormack's Weird Space Universe
- Bravo (Immega 714 2) a.k.a. Brazil Novo, a.k.a. Peekaboo Two - Robert A. Heinlein & Spider Robinson's Variable Star
- Brax – “Q-Less,” Star Trek: Deep Space Nine Episode 6, Season 1, 2-7-1993
- Breadbasket Dan Larnerd's short story "On A Crooked Planet," Raygun Revival. June 8, 2011
- Breakmann - Jack McDevitt's Polaris
- Breese - John Scalzi's The God Engines
- Bre’el IV – “Deja Q,” Star Trek: The Next Generation Episode 13, Season 3, 2-5-1990
- Brekka (Delos IV, a different planet and star system from the Delos IV where Beverly Crusher interned) - "Symbiosis," Star Trek: The Next Generation Episode 21, Season 1, 4-18-1988
- Brentaal - Star Wars universe
- Brequinda - Hitchhiker's Guide To The Galaxy
- Brentalia – “New Ground,” Star Trek: The Next Generation Episode 10, Season 5, 1-6-1992
- Bressia – Dan Simmons’s Hyperion, p. 141
- Breton Colony probable (Celtic Planet)- John Scalzi's The Android's Sheep, brief reference, p. 301
- Brevor - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Brezane - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Briand - John Barnes's A Million Open Doors universe
- Brightkinde (terraformed planet) - Walter Jon Wlliams' Aristoi
- Brightness (moon of Vegaschrist) - Roger Levy's The Rig', p. 141
- Brimstone (terraformed moon) - Laura J. Mixon's Burning the Ice
- Brinda V – “Shadow play,” Star Trek: Deep Space Nine Episode 16, Season 2, 2-20-1994
- Bringold V – “Up the Long Ladder,” Star Trek: The Next Generation Episode 18, Season 2, 5-22-1989
- Brinze - John Brunner's Interstellar Empire
- Brjnn - John Scalzi's The Android's Sheep, brief reference, p. 217
- Brolligo - Matthew Hughes's Magestrum, Magestrum universe
- Brolf - Timothy Zahn's Outbound Flight (Star Wars universe)
- Brolyo - Jack McDevitt's Polaris
- Bronson Alpha (orbiting rogue star Bellus) - When Worlds Collide 1951 film
- Bronson Beta (orbiting rogue star Bellus) - When Worlds Collide 1951 film
- Brontitall - Hitchhiker's Guide to the Galaxy
- Browder IV – “Allegiance,” Star Trek: The Next Generation Episode 18, Season 3, 3-26-1990
- Brunnis – Lexx universe
- Brycion - Norman Spinrad's 'The Solarians
- Bryma – “The Maquis, Part II,” Star Trek: Deep Space Nine Episode 21, Season 2, 5-1-1994
- Buchad - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Bucol II – “Animals,” Blake’s 7 Episode D5, 10-26-1981
- Buffo - Matthew Hughes's Magestrum, Magestrum universe
- Buktu - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Buskey - Brian Aldiss's The Dark Light Years, brief reference p. 79
- Busted Axel - Keith Laumer's Retief and the Warlords, brief reference p. 179
- Butcher Bay (Prison Planet) - The Chronicle of Riddick: Escape from Butcher Bay game
- Byer's Planet - Robert A. Heinlein's Tunnel in the Sky p. 38
- Bynaus – “11001001,” Star Trek: The Next Generation Episode 14, Season 1, 2-1-1988
- Byss - Star Wars universe
- Byway - Matthew Hughes's Magestrum, Magestrum universe
C[]
- CD-49 - Charles E. Gannon's Fire With Fire
- Caamas - Star Wars universe
- Cabal - Sheri S. Tepper's Shadow's End
- Cabbage - Evil Alien Conquerors 2002 film
- Cadomai - Star Wars universe
- Caduces (one of two moons of Hermes) - Poul Anderson's Mirkheim
- Caelum (a.k.a. Throne) - F. Paul Wilson's Enemy of the State
- Cal Seti - Star Wars universe
- Calafia - David Brin's Startide Rising
- Caldik Prime - “The Caretaker, Part 1,” Star Trek: Voyager Episode 1, Season 1, 1-16-1995
- Caldonia – “The Price,” Star Trek: The Next Generation Episode 8, Season 3, 11-13-1989
- Caledonia - John Scalzi's The Android's Sheep, brief reference, p. 217
- Caliban - Anderson Gentry's The Crider Chronicles
- Caliban - Don D'Ammassa's Haven
- Caliban - Poul Anderson's Firetime
- Calidor (moon of Praximf) - Phyllis Gotlieb's Mindworlds, p. 94
- Caligula - Nancy Kress's Probability Moon
- Callë - James Blish's short story "This Earth of Hours" in Fantasy and Science Fiction June 1959
- Callinon VII (Gas Giant) - “The Search, Part 1,” Star Trek: Deep Space Nine Episode 1, Season 3, 9-26-1994
- Calliope - Mike Resnick's short story "Catastrophe Bakers and a Canticle for Liebowitz: in The New Space Opera 2
- Callnowia - Invader Zim cartoon series
- Calondia IV - “Playing God,” Star Trek: Deep Space Nine Episode 17, Season 2, 2-27-1994
- Calpurnia - Poul Anderson's A World Named Cleopatra
- Calufrax - "The Pirate Planet," episodes of Doctor Who
- Camazotz - Madeleine L'Engle's A Wrinkle in Time
- Camblyne - Andre Norton's novel Plague Ship
- Camden - Nancy Kress's Probability Moon, p. 92
- Camelot - Don D'Ammassa's Haven, brief reference
- Cameo - Elizabeth A. Lynn's A Different Light
- Campor III – “Defiant,” Star Trek: Deep Space Nine Episode 9, Season 3, 11-21-1994
- Camor V - "Bloodlines," Star Trek: The Next Generation
- Camus II - "Turnabout Intruder," Star Trek: The Original Series Episode 79, Season 3, 6-3-1969
- Canamar (Prison Planet) “Canamar,” Star Trek: Enterprise Episode 17, Season 2, 2-26-2003
- Cancri-9 (a.k.a. Steel World) - B.V. Larson's novel Steel World (Undying Mercenaries series)
- Candela - Brian Herbert and Kevin J. Anderson's 'Hellhole universe, brief reference
- Canis Lunis - Buzz Lightyear of Star Command
- Cannibilon (cannibal planet)- Futurama
- Cantor V - Craig DiLouie's The Great Planet Robbery
- Canyon (formerly Warhead) - Larry Niven's The Ringworld Engineers
- Cap - Nancy Kress's Crucible
- Capaise - Brian Aldiss's The Helliconia Trilogy
- Capella II - Chad Oliver's "North Wind," a short story in William F. Nolan's collection A Wilderness of Stars
- Capella IV - Chad Oliver's "North Wind," a short story in William F. Nolan's collection A Wilderness of Stars
- Capella 4 (Mining Planet) - "Friday's Child," Star Trek: The Original Series Episode 32, Season 2, 12-1-1967, also Carmen Carter's Dreams of the Raven, a Star Trek: The Original Series novel, p. 170
- Capella VIII - Robert A. Heinlein's Time for the Stars, p. 238
- Capital (orbits Nova Sol A) - Roger MacBride Allen's Rogue Power
- Capital Planet - Buzz Lightyear of Star Command
- Caprica – “The Farm,” Battlestar Galactica, Season 2
- Cardassia Prime – “Emissary, Part 1,” Star Trek: Deep Space Nine Episode 1, Season 1, 1-3-1993; Keith R.A. Decandido's Star Trek: A Time for War, A Time for Peace, p. 88
- Cardassia III – “Prophet Motive,” Star Trek: Deep Space Nine Episode 16, Season 3, 2-20-1995
- Cardassia IV (possible Prison Planet) - “The Homecoming,” Star Trek: Deep Space Nine Episode 1, Season 2, 9-26-1993
- Cardassia V – “Shadowplay,” Star Trek: Deep Space Nine Episode 16, Season 2, 2-20-1994
- Carida - Star Wars universe
- Carolus - Robert A. W. Lowndes's The Puzzle Planet
- Carox A II - A.E. Van Yogt and E. Mayne Hull's Planets for Sale, brief reference
- Carpathia - Outcasts television series
- Carraya IV – Star Trek: The Next Generation Episode 16, Season 6, 2-22-1993, Carraya IV Described
- Carston's Planet - Poul Anderson's World Without Stars, brief reference
- Carsus - Spiral Scratch, Doctor Who novel
- Caslon - John Kessel's short story "Events Preceding the Helvetican Renaissance," in The New Space Opera 2
- Casagan - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Cassandra - Samuel R. Delaney's Nova, brief reference
- Cassp (Gas Giant) - Timothy Zahn's Night Train to Rigel
- Castacorze - Brian W. Aldiss' Bow Down to Nul
- Castal I - “Suddenly Human,” Star Trek: The Next Generation Episode 4, Season 4, 10-15-1990
- Castell - Star Wars universe
- Castor's Planet - Poul Anderson's World Without Stars, brief reference
- Castrovalva - "Andromeda," episodes of Doctor Who
- Catalan - Brian Herbert and Kevin J. Anderson’s Spice Planet (Dune universe)
- Catalina - Mack Reynolds' Planetary Agent X
- Catarkhus - Adam-Troy Castro's Emissaries From The Dead
- Catastrophea - Catastrophea Doctor Who novel
- Cathanor - Don D'Ammassa's Narcissus
- Cathar Star Wars universe
- Cathor - Cleve Cartmill's short story prediticitn nuclear weapons "Deadline," Astounding March 1944
- Cato Neimoidia - Star Wars universe
- Caulfeld III (Arctic Planet) - “The Rebellion," Star Wars universe
- Cavillica 61 Virginis system) - Marguerite Reed's novel Archangel, p. 89
- Celsus V - Robert Sheckley's Mindswap
- Celtris I - “Chain of Command, Part 1,” Star Trek: The Next Generation Episode 10, Season 6, 12-14-1992
- Centares - Star Wars universe
- Centauri Three, a.k.a. New Earth - John Varley's short story Air Raid, in his collection In the Hall of the Martian Kings, p. 57
- Centaurus 7 - "Requiem for Methuselah," Star Trek: The Original Series Episode 76, Season 3, 2-14-1969, brief reference
- Central World - James White's Star Surgeon, p. 279
- Centris Magna - Charles Stross’s Iron Sunrise, p. 120
- Centuris - Stan Johnson and Joshua Shapiro's (nonfiction) The True Story of Bigfoot
- Centaurus III - James Blish's short story "Beep" in Galaxy, February 1954
- Cephlon - “Deliverance,” Blake’s 7 Episode A12, 3-20-1978
- Cerberus - Jack L. Chalker's The Four Lords of the Diamond series
- Cercopes - Chris Roberson's Further: Beyond the Threshold
- Cerebrus II - “Too Short a Lesson,” Star Trek: The Next Generation Episode 15, Season 1, 2-8-1988
- Cerea - Star Wars universe
- Cernakan - Suzanne Palmer's Finder
- Cereb (moon) - Neal Ascher's Gridlinked
- Cerulia 4, a.k.a. Vixen - Poul Anderson's We Claim These Stars, pp. 19-21
- Cestus - Star Wars universe (Cestus is also a star in the Star Trek universe)
- Cestus III - "Arena," Star Trek: The Original Series Episode 19, Season 1, 1-19-1967; Keith R.A. Decandido's Star Trek: A Time for War, A Time for Peace
- Cethyd - Iain M. Bank's The Hydrogen Sonata
- Ceti Alpha V - "Space Seed," Star Trek: The Original Series Episode, 2-16-67
- Ceti Gamma II - Babylon 5 universe
- Ceto - Geoff Nelder's short story "Colloidal Suspension" in David Conyers et al., eds.s Extreme Planets
- Chaar - Transformers series
- Chad - Star Wars universe
- Chagfun - John Scalzi's The Android's Sheep
- Chalderescol - James White's Hospital Station, p. 124
- Chaleen - F.M. Busby's The Proud Enemy, p. 139
- Chalganna - Star Wars universe
- Chandrila - Star Wars universe
- Charcunga - "Mortos Der Soulstealer" episode of Invader Zim cartoon series
- Charity - Robert A. Heinlein's Starman Jones
- Charo - M. John Harrison's Empty Space: A Haunting, brief reference p. 95
- Chasulon (Broltur home world) - Michael Cobley's Humanity's Fire series
- Chloris Doctor Who universe
- Cheyne III - Neal Ascher's Gridlinked
- Chabad - Elizabeth A. Lynn's A Different Light
- Chaka Home - John Barnes's A Million Open Doors universe
- Chaltok IV “Time and Again,” Star Trek: Voyager Episode 3, Season 1, 1-30-1995
- Chao Phrya - Brian Stableford's Promised Land, Hooded Swan universe
- Chao Ti - Jack McDevitt's Polaris
- Chapek 9 - "Fear of a Bot Planet," Futurama, Volume 1, Episode 5
- Charis (moon over Vulcan) - Diane Duane's Spock's World (Star Trek Novel), pp. 54-57
- Charmian (moon of Cleopatra) - Poul Anderson's A World Named Cleopatra
- Charon - Jack L. Chalker's The Four Lords of the Diamond series
- Chartago a.k.a. PBX-1279 – “Cor-Ai,” Stargate SG-1 Season 1
- Charum Hakkor - Greg Bear's Cryptum: The Forernner Saga (Halo universe)
- Cheeringboda - Norman Spinrad's The Men in the Jungle, brief reference, p. 24
- Chelonia - (home planet of the Chelonians) - The Highest Science Doctor Who novel
- Cherby - Brian Herbert and Kevin J. Anderson's 'Hellhole universe, brief reference p. 127
- Chereion - Poul Anderson's Technic History universe, for example the short story "The Plague of Masters" in the collection Sir Dominic Flandry: The Last Knight of Terra
- Chermosh (Buddhist planet) - H. Beam Piper's Space Viking, p. 115
- Cheron - "Let That be Your Last Battlefield," Star Trek: The Original Series, Episode 70, Season 3, 1-10-1969
- Chicolini - Robert Kroese's Starship Grifters'
- Chiffewar - Ursula K. Le Guin's Left hand of Darkness, p. 35
- Chilo - Tobias Buckell's Sly Mongoose.
- Chimeleon - Sean Williams' Saturn Returns
- Chin - Matthew Hughes's Majestrum
- China III - Elizabeth A. Lynn's A Different Light
- Chiron - Sid Meier's Alpha Centauri video game
- Chloris - "The Creature from the Pit," episodes of Doctor Who
- Chobe's World - Samuel R. Delaney's Nova, brief reference
- Chorrey - Matthew Hughes's Magestrum, Magestrum universe
- Chronos (Gas Giant) - Poul Anderson's Mirkheim
- Chthon - Piers Anthony's Chthon
- Chudra - Elizabeth A. Lynn's A Different Light
- Chulak - "Children of the Gods" and “Bloodlines,” Stargate SG-1 Season 1; “The Serpent’s Venom,” Stargate SG1 Season 4; “Moebius, Part 2,” Stargate SG-1 Season 8; “Fourth Horseman, Part 1,” Stargate SG-1 Season 9
- Ciceronicus 12 - Hitchhiker’s Guide to the Galaxy
- Cil - Isaac Asimov's Second Empire
- Cime - Ursula K. Le Guin's Left hand of Darkness, p. 35
- Cimmeria - "Thor's Hammer," Stargate SG-1 Season 1; “Thor’s Chariot,” Stargate SG-1 Season 2
- Cinderblock - Mike Resnick's A Miracle of Rare Resign
- Cineplex 14 - "A Bicyclops Built for Two," Futurama Volume 2, Episode 9
- Cinna - Isaac Asimov's Forward the Foundation
- Cinnagar - Star Wars universe
- Cinruss - James White's Hospital Station, p. 124
- Circarporus V - Star Wars universe
- Circe - Gridlinked
- Circle IV - Samuel R. Delaney's Nova, brief reference
- Circoven - Neal Asher's "Shell Game," a short story in The New Space Opera 2
- Ciress - Sigilverse (comic book) universe
- Clabshub - Brian Aldiss's The Dark Light Years brief reference p. 79
- Clack'dor VII - Star Wars universe
- Claghorne - Matthew Hughes's Magestrum, Magestrum universe
- Cladius (dwarf planet) - Derek Künsken's novel Quantum Magician
- Claw - Poul Anderson's World Without Stars, brief reference
- Clementina - Brian Aldiss's The Dark Light Years, p. 31
- Cleopatra - Poul Anderson's A World Named Cleopatra
- Cles - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Clitoris - Vegas In Space 1991 film
- Clom (twin planet of Raxicoricofallapatorius) - Doctor Who universe
- Clonclurry - Peter F. Hamilton's Pandora's Star, p. 185
- Cobalt - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Col Hydrae 7 - Tad Williams's short story "The Tenth Muse" in The New Space Opera 2
- Colonized Planet 3 a.k.a. Planet 2 - Doris Lessing's The Sirian Experiments, Canopus in Argos Archives series
- Colonized Planet 3 - Doris Lessing's The Sirian Experiments, Canopus in Argos Archives series
- Colonized Planet 3 (1) (Terrestrial Moon - Doris Lessing's The Sirian Experiments, Canopus in Argos Archives series, Pp. 158-159
- Colonized Planet 8 a.k.a. Planet 8 - Doris Lessing's The Sirian Experiments, Canopus in Argos Archives series
- Colonized Planet 9 a.k.a. Planet 9 - Doris Lessing's The Sirian Experiments, Canopus in Argos Archives series
- Colonized Planet 22 - Doris Lessing's The Sirian Experiments, Canopus in Argos Archives series
- Colonized Planet 23 (Desert Planet) - Doris Lessing's The Sirian Experiments, Canopus in Argos Archives series
- Colonized Planet 24 - Doris Lessing's The Sirian Experiments, Canopus in Argos Archives series
- Colonized Planet 25 - Doris Lessing's The Sirian Experiments, Canopus in Argos Archives series
- Colony - Kurt Heinrich Hyatt's short story, "Cellarman", Aphelion December 2010-January 2011, Vol. 14, Issue 148
- Colony 10, a.k.a. Planet 10 - Doris Lessing's The Sirian Experiments, Canopus in Argos Archives series
- Colony 622 (orbits 47 Ursae Majoris) - John Scalzi's Old Man's War p. 183
- Colsiti - L.E. Modesitt's The Ethos Efect, p. 287
- Colthenheim - A History Channel Thanksgiving 15th Season, 13th Episode of South Park November 9, 2011.
- Coltice (orbits Polaris) - Scientology
- Comagrave - Alan Dean Foster's Diurnity's Dawn
- Commerce Planet 01 - "Premiere," Farscape Season 1, 3-19-1999
- Comporellon - Foundation's Edge
- Compson's World - Chris Moriarty's Spin State
- Cona - Star Wars universe
- Concord Dawn - Star Wars universe
- Conrad's World - Richard Paul Russo's The Rosetta Code
- Constance - Robert A. Heinlein's Time for the Stars
- Constance (planet or moon) - Firefly/Serenity universe
- Constantia - L.E. Modesitt's The Ethos Efect
- Contrabargid - Yahtzee Crosshaw's Will Save The Galaxy For Food
- Conventia - Invader Zim cartoon series
- Conveyoorus - "Megadoomer," episode of Invader Zim cartoon series
- Coral - John Scalzi's Old Man's War
- Coralla - Suzanne Palmer's Finder
- Coralemon - "Sucker Bait," a short story in Isaac Asimov's The Martian Way and Other Stories brief reference
- Cordelet - Jack McDevitt's Polaris
- Corellia - Star Wars universe
- Coridan - "Journey to Babel," Star Trek: The Original Series Episode, 44, Season 2, 11-17-1967 Reference as a Mining Colony, "Shadows of P'Jem," Star Trek: Enterprize Episode 14, Season 1, 2-6-2002
- Corinthia (SF planet) - Anderson Gentry's The Crider Chronicles
- Cormoral - Jack McDevitt's Polaris
- Cornelia - Poul Anderson's A World Named Cleopatra
- Corobon – “The Evidence,” a short story by Len Shaw in Nebula Science Fiction Volume 2, Issue 19
- Corrin - Brian Herbert and Kevin J. Anderson's Dune: The Battle of Corrin Dune series
- Corthid - John C. Wright's Null-A Continuum, p. 108
- Corulag - Star Wars universe
- Coruscant - Star Wars universe
- Corvis Minor - Star Wars universe
- Cos (terraformed planet) - Walter Jon Wlliams' Aristoi
- Courmaline - Matthew Hughes's The Other
- Cova Banda - John Scalzi's Old Man's War
- Covenant - Tad Williams's short story "The Tenth Muse" in The New Space Opera 2
- Cowboydan - Ellis Weiner's National Lampoon's Doon
- Coyote (2nd Moon of Bear) - Allen Steele's Coyote; Coyote Rising
- Crematoria (Prison Planet) - Film The Chronicles of Riddick 2004
- Cremer - John Barnes's A Million Open Doors universe
- Cronos - Chris Roberson's Further: Beyond the Threshold
- Crucible - Tanya Huff's The Heart of War
- Crucible - Alastair Reynolds's Blue Remembered Earth
- Crux - Paul Preuss's Arthur C. Clarke's Venus Prime V: Volume 6: The Shining Ones
- Csilla - Star Wars universe
- Cthuga (Gas Giant) - Paul McAuley's Evening's Empire, page 12
- Cube World - G. David Nordley's To Climb a Flat Mountain.
- Culain (Celtic Planet) - L.E. Modesitt's The Eternity Artifact, p. 15
- Cularin - Star Wars universe
- Curtana - H. Beam Piper's Space Viking
- Cut (one of 7 moons of World) - Nancy Kress's Probability Moon
- Cyclopia - "A Bicyclops Built for Two," Futurama Volume 2, Episode 9
- Cyclos - "What Goes Around Comes Around, episode of Miss 2059 Nov. 16, 2017
- Cygnet IV - Keith R.A. Decandido's Star Trek: A Time for War, A Time for Peace, - p. 291
- Cygnet XIV - "Tomorrow is Yesterday," Star Trek: The Original Series Episode 21, Season 1, 1-26-1969
- Cygnus Alpha - “The Way Back,” Blake’s 7 Episode A1, 1-2-1978; "Cygnus Alpha," Blake's 7 Episode A3, 1-16-1978
- Cygnus X-1 - Ellis Weiner's National Lampoon's Doon
- Cynthia (orbits star O2 Eridani AH) - "Day of Burning," short story in Poul Anderson's collection Beyond the Beyond p. 87, star identified in Poul Anderson's Mirkheim
- Cyrillia - “The Q and the Grey,” Star Trek: Voyager Episode 11, Season 3, 11-27-1996
- Cyteen - C.J. Cherryh's Downbelow Station and Merchanter's Luck
- Cytheria “The Nth Degree,” Star Trek: The Next Generation Episode 19, Season 4, 4-1-1991
- Cyrus III - Babylon 5 universe
D[]
- D'Urth - Brian Herbert's The Race For God
- Da Soocha V - Star Wars universe
- Dac - Star Wars universe
- Dachlyd – “Captain’s Holiday,” Star Trek: The Next Generation Episode 19, Season 3, 4-2-1990
- Daedelus (Mining Planet) - “Rule of Law,” The Outer Limits Episode 718, Season 7
- Daedalus (Gas Giant) - Larry Niven and Brenda Cooper's Building Harlequin's Moon
- Daedalus - Margaret Ball's Disappearing Act
- Dagobah - Star Wars universe
- Dagon - H. Beam Piper's Space Viking
- Dagoola IV - Lois McMaster Bujold's Vorkosigan Saga
- Dagostin - China Miéville's Embassytown
- Dakala (Rogue Planet) – “Rogue Planet,” Star Trek: Enterprise Episode 17, Season 1, 3-2-2002
- Dahlgren's World (Barrazan Five) - Phyllis Gottlieb's O Master Caliban
- Dakar - Elizabeth A. Lynn's A Different Light
- Dakara – “Reckoning, Part 1,” “Reckoning, Part 2” and “Threads,” Stargate SG-1 Season 8
- Daled IV – “The Dauphin,” Star Trek: The Next Generation Episode 10, Season 2, 2-20-1989
- Daluse - Lloyd Biggle Jr.'s The Rule of the Door
- Damak - Robert Silberberg and Randall Garrett's short story "Catch a Thief" in their collection A Little Intelligence
- Damogran (Ocean Planet) - The Hitchhiker’s Guide to the Galaxy
- Danaan - L.E. Modesitt's The Eternity Artifact, Pp. 107-108
- Damanhur-3 - John Birmingham's The Cruel Stars
- Dangella III - David R. George's Allegiance in Exile, a Star Trek: The Original Series novel, p. 164
- Dangrobad Beta - The Hitchhiker’s Guide to the Galaxy
- Dantooine - Star Wars universe
- Dansson - Brian Aldiss's Starswarm, p. 46
- Dante - ("pleasure" or Vacation Planet) - James Gunn's Transgalactic, pp. 86-86. Transcendence universe.
- Dante's Eye - Richard Paul Russo's Inner Eclipse
- Danuta - Star Wars universe
- Dapdrof a.k.a. Pestolozzi - Brian Aldiss's The Dark Light Years
- Dara - Murray Leinster's novel This World is Taboo fill text
- Daran V - "For the World is Hollow and I Have Touched the Sky," Star Trek: The Original Series Episode 65, Season 3, 11-8-1968
- Darenthia - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Daribow - Isaac Asimov's Foundation universe
- Darien - Michael Cobley's Humanity's Fire series
- Darius (moon) - H. Beam Piper's Little Fuzzy
- Darkbloom - Walter Jon Williams' Aristoi
- Darnis - Gridlinked
- Darwin 4 – Alien Planet nonfiction television
- Davlos III - “Visionary,” Star Trek: Deep Space Nine Episode 17, Season 3, 2-27-1995
- Darwin IV - Wayne Douglas Barlowe's Expedition: Being an Account in Words and Artwork of the 2358 A.D. Voyage to Darwin IV
- Dathomir - Star Wars universe
- Dathyna - Poul Anderson's Satan's World
- Dava - Arkady Martine's novel A Memory Called Empire
- Davanna - Not of This Earth 1957 film
- Davlos VI - Keith R.A. Decandido's Star Trek: A Time for War, A Time for Peace, p. 253
- Dawn - Alan Dean Foster's Diurnity's Dawn
- Dayan - Poul Anderon's Ensign Flandry
- Davos IV - “Blood Oath,” Star Trek: Deep Space Nine Episode 19, Season 2, 3-27-1994
- Dazzle (moon) - C.L. Anderson's Bitter Angels
- Deadwood (planet or moon) - Firefly/Serenity universe
- Decapod 10 (Dr. Zoidberg's home planet) - Futurama
- Dee Pee Three (a.k.a. Delta Pavonis Three) - Charles E. Gannon's Fire With Fire
- Deemi - David Brin's Uplift universe
- Deep Water - John Scalzi's Old Man's War, brief reference p. 182
- Deerfly - Brenda Cooper's Reading the Wind, p. 252
- Deimos - “Sugar Dirt,” Space: Above and Beyond (SE-122), 4-19-1996
- Delaya (Alderaan III) - Star Wars universe
- Delcadore - John Brunner's Interstellar Empire
- Delfi II - A.E. Van Yogt and E. Mayne Hull's Planets for Sale
- Delicass - Isaac Asimov's Foundation and Empire, p. 182
- Dellaconda - Jack McDevitt's Polaris
- Delmak-O – Philip K. Dick’s A Maze of Death
- Delphi Ardu IV - David Mack's Fortune of War (Star Trek: Titan universe)
- Delos III a.k.a. Ornara - (Delos III is in the same star system as Brekka/Delos IV but not in the same star system as the Delos IV where Beverly Crusher interned) - "Symbiosis," Star Trek: The Next Generation Episode 21, Season 1, 4-18-1988 description
- Delos IV a.k.a. Brekka - "Symbiosis," Star Trek: The Next Generation Episode 21, Season 1, 4-18-1988 description
- Delos IV (where Beverly Crusher interned) - Star Trek: The Next Generation
- Delphon - "Spearhead from Space," episodes of Doctor Who
- Delphos – Wild, Wild Planet 1965 spaghetti sci-fi film
- Delta - “The Last Enemy,” Space: 1999 Episode 18, Season 1, 2-19-1976
- Delta Three - HG Wells' The Shape of Things to Come 1979 film
- Delta Capitis Lupi - Poul Anderson's Virgin Planet
- Delta Karpis I - Jack McDevitt's Polaris
- Delta Karpis III (a.k.a. Kissoff) - Jack McDevitt's Polaris
- Delta Karpis IV - Jack McDevitt's Polaris
- Delta Karpis V - Jack McDevitt's Polaris
- Delta Karpis VII (Gas Giant) - Jack McDevitt's Polaris
- Delta Magna (Swamp Planet) - "The Power of Kroll," episodes of Doctor Who
- Delta-Paulana - Ellis Weiner's National Lampoon's Doon
- Delta Pavonis Three (a.k.a. Dee Pee Three) - Charles E. Gannon's Fire With Fire
- Delta Sigma IV - Keith R.A. Decandido's Star Trek: A Time for War, A Time for Peace, p. 170
- Delta Vega - "Where No Man Has Gone Before," Star Trek: The Original Series Episode 1, Season 1, 9-22, 1966
- Deluros VIII - Mike Resnick's A Miracle of Rare Resign
- Demar - Star Wars universe
- Demarchia - Foundation's Triumph
- Demea (orbits 82 Eridani) - Elizabeth A. Lynn's A Different Light
- Demeter - John C. Wright's short story "The Far End of History" in The New Space Opera 2'
- Demetria - Sigilverse (comic book) universe
- Demmon - F.M. Busby's The Proud Enemy, p. 164
- Demos - Doctor Who universe
- Denaria - L.E. Modesitt's The Ethos Efect
- Deneb 2 - "Wolf in the Fold," Star Trek: The Original Series Episode 36, Season 2, 12-22-1967
- Deneb IV - "Encounter at Farpoint, Part I" and "Encounter at Farpoint, Part II," Star Trek: The Next Generation Episode 1, Season 1, 9-28-1987
- Deneb IV - Babylon 5
- Deneb IV - "The Mystery of Deneb IV," a short story by Robert Silverberg in Fantastic, February 1957
- Deneb IX a.k.a. Alpha Cygnus IX - “Sarek,” Star Trek: The Next Generation Episode 23, Season 3, 5-14-1990
- Deneb Drei (Deneb 3) - Dan Simmons’s Hyperion
- Deneb Vier (Deneb 4) - Dan Simmons’s Hyperion, p. 283
- Deneva - "Operation Annihilate!" Star Trek: The Original Series Episode 29, Season 1, 4-13-1967
- Denius III - “Contagion,” Star Trek: The Next Generation Episode 11, Season 2, 3-20-1989
- Denon - Star Wars universe
- Dennitza (Zoria III) - Poul Anderson's short story "A Knight of Ghosts and Shadows," in the collection Sir Dominick Flandry: The Last Knight of Terra
- Deralia - Star Wars universe
- Derby - F. Paul Wilson's Enemy of the State
- Derowd - Isaac Asimov's Prelude to Foundation
- Desperus (Prison Planet) - "The Daleks' Master Plan," episodes of Doctor Who
- Dessica II - “Gambit, Part 1,” Star Trek: The Next Generation Episode 4, Season 7, 10-11-1993
- Destrillion (sister planet to Dubrillion) - Star Wars universe
- Deva Loka - "Kinda," episodes of Doctor Who
- Deneva - Star Trek universe
- Devaron - Star Wars universe
- Devastis - "Tak, the Hideous New Girl" episode of Invader Zim cartoon series
- Devida II – “Times Arrow, Part 1,” Star Trek: The Next Generation Episode 26, Season 7, 6-15-1992
- Deyer - Star Wars universe
- Dezni - David Brin's Uplift universe
- Dhantu - Scott Westerfeld's The Risen Empire
- Dharel (Farkfar System) - L.E. Modesitt's The Ethos Efect
- Dhennar a.k.a. Kush 8 - L.E. Modesitt's The Ethos Efect
- Dhrawn - Hal Clement's Star Light (high gravity world)
- Diadem - Alastair Reynold's Revelation Space universe
- Dido – “The Rescue,” Doctor Who Season 2, Story Number 11, 2-1-1964
- Dilbia - Gordon R. Dickson's novella trilogy The Right to Arm Bears
- Dinadh - Sheri S. Tepper's Shadow's End
- Diomedes - Poul Anderson's Dominic Flandry universe, for example his War of the Wing-Men
- Dionis - Elizabeth A. Lynn's A Different Light
- Diplos - "The Stones of Blood," episodes of Doctor Who
- Diporia - Isaac Asimov's short story "Profession" in his collection Nine Tomorrows
- Dirna, a.k.a Procyon IX - Robert Silverberg's Master of Life and Death, pp. 121, 142
- Dirt - "Tak, the Hideous New Girl" episode of Invader Zim cartoon series
- Dis - Samuel R. Delaney's Nova, brief reference
- Dis (Desert Planet) - Harry Harrison's Planet of the Damned
- Dis - Andre Norton's Night of Masks
- Disneyplanet - brief reference in "Ephiphanies," an episode of Babylon 5
- Djiminid (Gas Giant) - Iain Banks's The Algebraist, p. 382
- Dobe - Keith Laumer's The Return of Retief, brief reference p. 161
- Dog (1st Moon of Bear) - Allen Steele's Coyote Rising
- Dogdoo 7 - Futurama
- Doldur - Star Wars universe
- Dolfirm - The Prisoners of Space episode of Lost in Space television series
- Dolium V, a.k.a. Zalda - Star Trek universe
- Dollar (moon orbiting Ree'hdworld) - Robert Holdstock's Eye Among the Blind
- Domo - “Assassin,” Blake’s 7 Episode D7, 11-9-1981
- Don Martin 3 - destroted planet mentioned in "The Day the Earth Stood Stupid" episode of Futurama
- Donarr - Poul Anderson's short story "Hunters in the Sky Cave" in the collection Sir Dominic Flandry: Last Knight of Terra
- Donovan - W. Michael Gear's Outpost (Donovan: Book One)
- Doon (Arrukus) - Ellis Weiner's National Lampoon's Doon
- Doon 8 - Keith Laumer's The Glory Game, brief reference
- Doradus - Mike Resnick's A Miracle of Rare Resign
- Dorca - “The Dorcons,” Space: 1999 Episode 24, Season 2, 11-12-1977
- Dorchlunt (German Planet) - Zach Hughes's Closed System
- Doreen - Craig DiLouie's The Great Planet Robbery
- Doria - James Gunn's Transcendental
- Doridora III - A.E. Van Yogt and E. Mayne Hull's Planets for Sale, brief reference
- Dorin - Star Wars universe
- Dorsai - Gordon Dickson's Dorsai series
- Dorumaa (moon) - Star Wars
- Dorvan V – “Journey’s End,” Star Trek: The Next Generation Episode 20, Season 7, 3-28-1994; Keith R.A. Decandido's Star Trek: A Time for War, A Time for Peace, p. 320
- Dosadi — Frank Herbert's The Dosadi Experiment
- Double Happiness - Gene Roddenberry's Andromeda television series
- Down - "The Handicapped," a short story in Larry Niven's collection Neutron Star
- Downunder (possible reference to colonization by Australians) - Don D'Ammassa's Haven, brief reference, p. 101
- Dozaria – “Indiscretion,” Star Trek: Deep Space Nine Episode 4, Season 4, 10-23-1995
- DQN 1196 (Hellhole) - Peter David's Strike Zone, a Star Trek Next Generation novel, Pp. 72-73
- Draada - "Heirloom," a short story bu Norman Spinrad in his collection No Direction Home
- Drabia - “The Q and the Grey,” Star Trek: Voyager Episode 11, Season 3, 11-27-1996
- Dracon - Enemy Mine 1985 film
- Draconia (home planet of the Draconians - "Frontier in Space," episodes of Doctor Who, March 31, 1973
- Drahva (home planet of the Drahvins) - "Galaxy 4," episodes of Doctor Who
- Dragon's End - C.L. Anderson's Bitter Angels, brief reference p. 121
- Drakka - L.E. Modesitt's The Ethos Efect
- Drall - Star Wars universe
- Drallab - Brian Aldiss's Starswarm, pp. 29-39
- Drambo a.k.a. Meatball (Ocean Planet) - James White's Major Operation, in Beginning Operations: A Sector General Omnibus
- Drayan II - "Innocence," Star Trek: Voyager, Episode 39, Season 2, 4-8-1996
- Draylon II – “Sanctuary,” Star Trek: Deep Space Nine Episode 10, Season 2, 11-28-1993
- Dreaden - John Scalzi's The Android's Sheep, p. 222
- DreamVeil - Richard Paul Russo's Inner Eclipse
- Dregocia (Mining Planet) - “The Summit,” The Outer Limits Episode 513, Season 5, 5-21-1999
- Drema IV - “Pen Pals,” Star Trek: The Next Generation Episode 15, Season 2, 5-1-1989
- Dreon VII – “For the Cause,” Star Trek: Deep Space Nine Episode 21, Season 4, 5-6-1996
- Rrissana II - David R. George III's Star Trek novel Allegiance in Exile
- Drongar - Star Wars universe
- Droplet - Over a Torrent Sea, Star Trek Titan series novel
- Droxy - Brian Aldiss's Starswarm, p. 33
- Druckenwell - Star Wars universe
- Dry Salvages - Paul McAuley's Into Everywhere
- Drygulch - Keith Laumer's Retief and the Warlords, brief reference, p. 79; Keith Laumer's The Return of Retief, Pp. 161, 169
- Dubiety, a.k.a. Haze - L.E. Modesitt Jr.'s Haze
- Dubrillion (sister planet to Destrillion) - Star Wars universe
- Ducommun - John Barnes's A Million Open Doors
- Dude Planet - “Planet Dude,” The Jetsons Episode 13, 12-16-1962
- Dugl III (homeworld of the Dulgaari) - Norman Spinrad's The Solarians
- Dugl IV (Gas Giant) - Norman Spinrad's The Solarians, p. 78
- Dugl V (Gas Giant) - Norman Spinrad's The Solarians, p.78
- Dugl VI - Norman Spinrad's The Solarians
- Dulkis – “The Dominators,” Doctor Who Season 6, Story Number 44, (4 episodes) 8-10-1968 to 9-7-1968
- Dunant - John Barnes's A Million Open Doors universe
- Dune - Frank Herbert's Dune universe
- Dunuos a.k.a. Hraggellon - John Morressy's Frostworld and Dreamfire
- Duralis - Dan Simmons’s Hyperion, p. 191
- Durani - Babylon 5 universe
- Durendal - H. Beam Piper's Space Viking
- Duro - Star Wars universe
- Dusilian IV – “Unification, Part II,” Star Trek: The Next Generation Episode 8, Season 5, 11-11-1991
- Durenia IV – “Remember Me,” Star Trek: The Next Generation Episode 5, Season 4, 10-22-1990
- Duthul - Diane Duane's Spock's World (Star Trek Novel), p. 39
- Dxun (moon or sister planet of Onderon) - Star Wars universe
- Dyar - Timothy Zahn's The Third Linx
- Dyhedra - Gene Roddenbery's Andromeda
- Dyson Alpha - John C. Wright's short story "The Far End of History" in The New Space Opera 2'
- Dytallix B a.k.a. Mira V (Mining Planet and Ribbon World) - "Conspiracy," Star Trek: The Next Generation Episode 24, Season 1, 5-9-1988
- Dyton - Firefly/Serenity universe
E[]
- Eadrax – Douglas Adams’ Hitchhiker’s Guide to the Galaxy
- Eagle (3rd Moon of Bear) - Allen Steele's Coyote Rising
- Earth II - Jason X 2001 film
- Earth2 (terraformed planet) - Walter Jon Wlliams' Aristoi
- Earth 2 - Another Earth 2011 film
- Ebola 9 - Futurama
- Ebon - "Nightmare" episode of Outer Limits
- Eccentric - Piers Anthony's Thousand Star
- Eden (poisonous planet where bad hippies die) - "The Way to Eden," Star Trek: The Original Series, Episode 75, Season 3, 2-21-1969
- Eden 7 (carpet bombed by Zapp Brannigan) - Futurama
- Edenburg - Peter F. Hamilton's Pandora's Star, p. 71
- Edge - Nancy Kress's Probability Moon, p. 37
- E.D.N. III - Lost Planet: Extreme Condition video game
- Edora – “A Hundred Days,” Stargate SG-1 Season 3
- 'eglantine (Ulubris system) - Iain Banks's The Algebraist
- Ehemi - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Eiger’s World - Charles Stross’s Iron Sunrise, p. 164
- Eild - Susan R. Matthews's Prisoner of Conscience
- Ekos - "Patterns of Force," Star Trek: The Original Series Episode 52, Season 2, 11-16-1968
- El-Adrel IV - “Darmok,” Star Trek: The Next Generation Episode 2, Season 5, 9-30-1991
- El Grande (Gas Giant) - Ben Jeapes's Phoenicia's World
- El Kuara - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Elaas - "Elaan of Troyius," Star Trek: The Original Series Episode 57, Season 3, 12-20-1968
- Elag a.k.a. Haven - C.J. Cherryh's The Faded Sun Trilogy
- Elamin IX - Keith R.A. Decandido's Star Trek: A Time for War, A Time for Peace
- Elaysia - “Melora,” Star Trek: Deep Space Nine Episode 6, Season 2, 10-31-1993
- Elan - Peter F. Hamilton's Pandora's Star
- Elba II - "Whom Gods Destroy," Star Trek: The Original Series, Episode 71, Season 3, 1-3-1969
- Eleutheria - Poul Anderson's Firetime
- Ellna - “Devil’s Planet,” Space: 1999 Episode 22, Season 2, 9-1-1977
- Elom - Star Wars universe
- Elpenor (gas Giant) - John C. Wright's short story "The Far End of History" in The New Space Opera 2'
- Elrood - Star Wars universe
- Elsewhere - Sheri Tepper's Shadow's End
- Eltanin (Gamma Draconis) - Ursula K. Le Guin's Planet of Exile
- Elysia - Sigilverse (comic book) universe
- Elysia - Robert A. Heinlein's Time for the Stars
- Elysium - L.E. Modesiit Jr.'s The Elysium Commission
- Elysium - Samuel R. Delaney's Nova, brief reference
- Elysium (Mining Planet) - John Scalzi's Old Man's War, Pp. 194-195
- Elysium - Unarius (UFO Religion)
- Eminiar VII - "A Taste of Armageddon," Star Trek: The Original Series Episode 23, Season 1, 2-23-1967
- Emporia - Keith Laumer's Retief and the Warlords
- Enara Prime - “Remember,” Star Trek: Voyager Episode 6, Season 3, 10-9-1996
- Enchanter - Elizabeth A. Lynn's A Different Light
- End - John Scalzi's novel The Collapsing Empire
- Ender's World - Orson Scott Card's Ender's Game
- Endor (Gas Giant) - Star Wars universe
- Endymion - Elizabeth Bear's Undertow, p. 127
- Endsa - John Scalzi's The God Engines
- Enesi - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- England - "The King and I," a faux play in The King is Dead episode of Family Guy animated television series
- Enigma 88 (Arctic Planet) - Hal Clement's short story, "Still River," Locus Vol. 20, #5, No.316, May 1987
- Enlil - Elizabeth Bear's Undertow, p. 187
- Ennan VI - “Time Squared,” Star Trek: The Next Generation Episode 13, Season 2, 4-3-1969
- Ennth - Star Wars universe
- Ensbo - Ursula K. Le Guin's Left hand of Darkness, p. 35
- Entartiodroma - M. John Harrison's Empty Space: A Haunting, brief reference, p. 195
- EnterCo - Michael Rubens' The Sheriff of Yrnameer, brief reference
- Eolhxir - John Clute's Appleseed
- Eos - Star Wars universe
- Enobarbus - Poul Anderson's A World Named Cleopatra
- Ephesus Three - Thomas Harlan's novel House of Reeds, p. 87
- Epsilon Caneris 3 - "Metamorphosis," Star Trek: The Original Series Episode 31, Season 2, 11-10-1967
- Epsilon Cuniculi 7 - Ian Stewart and Jack Cohen's Heaven (SF novel), p. 68
- Epsilon Hydra VII - “Q-Less,” Star Trek: Deep Space Nine Episode 6, Season 1, 2-7-1993
- Epsilon Indi A (a.k.a. Shamo) - Charles E. Gannon's Fire With Fire, p. 255
- Epsilon Moon - Elizabeth A. Lynn's A Different Light
- Eqbas Vorhi - Karen Traviss' Wess'har Wars universe
- Erabus Prime - “Q-Less,” Star Trek: Deep Space Nine Episode 6, Season 1, 2-7-1993
- Ercu - Brian Herbert's The Race For God
- Erewhon - David Weber's On Basilisk Station, Honorverse
- Erie - John Scalzi's Zoe's Tale
- Ergo - Star Wars universe
- Ergro - The Lost Planet, serial, Columbia, 1952
- Erebusal - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Eriadu - Star Wars universe
- Eridan - "On the Rock," a short story in Colin Harvey's collection Displacement
- 40 Eridani 4 a.k.a. Vulcan - Diane Duane's Spock's World (Star Trek novel), pp. 54-57
- 82 Eridani III (a.k.a. Planet Xi) 0 R.M. Meluch's Strength and Honor, p. 92
- Eridani Foxtrot - James Patrick Kelly's Burn, p. 18
- Eroticon VI – Douglas Adams’s The Hitchhiker’s Guide to the Galaxy
- Eros - Unarius (a UFO Religion)
- Errikang VII - “Q-Less,” Star Trek: Deep Space Nine Episode 6, Season 1, 2-7-1993
- Erythro (moon) - Isaac Asimov's Nemesis
- Escobar - Lois McMaster Bujold's Vorkosigan Saga
- Esflavian – Douglas Adams’s The Hitchhiker’s Guide to the Galaxy
- Eshri - Iain M. Banks's The Hydrogen Sonata
- Esmeralda - Ron Goulart's Clockwork Pirates
- Experance - C.J. Cherryh's Merchanter's Luck
- Esseles - Star Wars universe
- Esthaa a.k.a. Aurigae Epsilon V - "Your Haploid Heart,"; a short story by James Tiptree. Jr. in Analog 1969 and World's Best Science Fiction 1970, ed. Donald A. Wallheim & Terry Carr
- Estrada's World - Harry Harrison's Planet of the Damned, brief reference
- Eta Carina XCIX (Twenty-First Earth) - John C. Wright's short story "The Far End of History" in The New Space Opera 2
- Eta Ceta IV - Lois McMaster Bujold's Vorkosigan Saga
- Eta Tauri, a.k.a. Alcyone - “Haven,” Star Trek: The Next Generation Episode 10, Season 1, 11-30-1987
- Eternia – Masters of the Universe television series
- Eternity - Robert Holdstock's Eye Among the Blind, p. 71
- Eternium (Nibblonian home planet) - Futurama
- Etheria – She-Ra: Princess of Power animated television series
- Etla - James White's Star Surgeon, p. 251
- Etosha - Diane Duane's Spock's World(Star Trek novel), p. 39
- Etti IV - Star Wars universe
- Euronda - “The Other Side,” Stargate SG-1 Season 4
- Eurydice (Sagitariaus Arm) - Ken Macleod's Newton's Wake: A Space Opera
- Euterpe - Isaac Asimov's Robots and Empire
- Eversnow - C.J. Cherryh's Forty Thousand in Gehenna, brief reference
- Eviticu - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Excalbia - "The Savage Curtain," Star Trek: The Original Series Episode 77, Season 3, 3-7-1969; Tony Daniel's Star Trek: The Original Series novel Savage Trade
- Excalibur - H. Beam Piper's Space Viking
- Exxilon - "Death to the Daleks," episodes of Doctor Who
- Exo III - "What are Little Girls Made Of?" Star Trek: The Original Series Episode 10, Season 1, 10-20-1966
- Ezra (Desert Planet) - Firefly/Serenity universe
F[]
- Fabulous Heaven (Gay Planet) – “You Want to Put That Where?” Tripping the Rift, television series, Season 2
- Fafnir (Neutral Planet) - Robert Silverberg's short story "Neutral Planet"
- Fahleena III - “Dramatis Personae,” Star Trek: Deep Space Nine Episode 17, Season 1, 5-30-1993
- Fairview - Mike Resnick and Lesli Robyn's short story "Shame" in Analog January/February 2010
- Falkesen - Jay Lake's short story "To Raise a Mutiny Betwixt Ourselves" in The New Space Opera 2
- Falcon 34 - Rachel Bach's Fortune's Pawn, p. 268
- Falleen - Star Wars universe
- Fallia - Douglas Adams's The Hitchhiker’s Guide to the Galaxy
- Fand (Lacaille 9352) - Alastair Reynold's Revelation Space universe
- Fantasy Planet – “Planet Fantasy,” The Jetsons Episode 46, 1-26-85
- Fantasy Planet - Futurama animated television series
- Far Away - Peter F. Hamilton's Pandora's Star, p. 72
- Far Jerusalem(probable planet) - Peter F. Hamilton's Pandora's Star, p. 227
- Far Star - Robert A. Heinlein's Citizen of the Galaxy
- Farius Prime - “The Maquis, Part 1,” Star Trek: Deep Space Nine Episode 20, Season 2, 4-24-1994
- Faraway - Robert A. Heinlein's Starship Troopers
- Farostator - Scott Mackay's Phytosphere, p. 173
- Fargone - C.J. Cherryh's Merchanter's Luck
- Fasser IV - A.E. Van Yogt and E. Mayne Hull's Planets for Sale
- Fatawa - Scott Westerfeld's The Killing of Worlds, brief reference
- Faun Hakkor - Greg Bear's Cryptum: The Forernner Saga (Halo universe)
- Feduccia XV - M. John Harrison's Empty Space: A Haunting, p. 79
- Felicity - Robert A. Heinlein's Time Enough for Love
- Fellebia (possible planet) – “Unexpected,” Star Trek: Enterprise Episode 4, Season 1, 10-17-2001
- Felucia - Star Wars universe
- Fendaus V -“Loud as a Whisper,” Star Trek: The Next Generation Episode 5, Season 2, 1-9-1989
- Fenris - H. Beam Piper's Four-Day Planet
- Feral - "Prometheus," a short story in Philip Jose Farmer's collection Down in the Black Gang
- Ferenginar – “Family Business,” Star Trek: Deep Space Nine Episode 23, Season 3, 5-15-1995
- Ferlang - Robert Sheckley's short story "A Supplicant in Space," in the collection The Best of Galaxy, Volume II
- Fest - Star Wars universe
- Festi XV - Brian Aldiss's Starswarm, p. 17-18; Brian Aldiss's Who Can Replace a Man?, pp. 120-180
- Fhloston - The Fifth Element 1997 film
- Filia - Isaac Asimov's Foundation and Empire
- Filj - E.M. Busby's The Proud Enemy, p. 44
- Fima colony - “Remember,” Star Trek: Voyager Episode 6, Season 3, 10-9-1996
- Fina Prime - “Life Signs,” Star Trek: Voyager Episode 19, Season 2, 2-26-1996
- Fiorina 161 (Prison Planet) - Alien³ 1992 film
- Fire – Lexx universe
- First Foot - Paul McAuley's Into Everywhere
- Fishermarch (Water Planet) - Richel Bach's Future's Pawn
- Flamberge - H. Beam Piper's Space Viking
- Flamme - Keith Laumer's The Glory Game, brief reference
- Flash (moon of Greene's World) - Elizabeth Bear's Undertow
- Flatulon 5 - "The Junkman Cometh," The Adventures of Jimmy Neutron, Boy Genius, 3-12-2004, brief reference
- Flaxia - “Improbable Cause,” Star Trek: Deep Space Nine Episode 20, Season 3, 4-24-1995
- Fleer - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Flesk - Matthew Hughes's The Spiral Labyrinthe, p. 35, Majestrum trilogy
- Flinn Colony - Babylon 5 universe
- Flint - F. Paul Wilson's Enemy of the State
- Flobee's Mission Planet - "Tak, the Hideous New Girl" episode of Invader Zim cartoon series.
- Flora - John Boyd's The Pollinators of Eden
- Flora - James Gunn's Transcendental, p. 201
- Florana - "Invasion of the Dinosaurs," episodes of Doctor Who.
- Floridia 7 (Spring Break Planet) – “Power to the Peephole,” Tripping the Rift, Season 1
- Florina - Isaac Asimov's The Currents of Space
- Flossenberger - Evan Mandery's First Contact: Or, Its Later Than You Think, p. 213
- Fluva - Alan Dean Foster's Drowning World
- Fiorina 'Fury' 161 (Mining Planet) - Alien3
- Fode XII - John Morressy's Frostworld and Dreamfire
- Folsom's Planet - Barry N. Malzberg's On A Planet Alien
- Fomalhaut - Dan Simmons’s Hyperion, Pp. 211-212
- Fondor - Star Wars universe
- Foodcourtia - Invader Zim cartoon series
- Forbit - John Brunner's Interstellar Empire, p. 221
- Forest - Anderson Gentry's The Crider Chronicles
- Forest Moon of Akdar (swamp planet) - Robert Kroese's Starship Grifters
- Forest Moon of Endor (Terrestrial Moon) - Star Wars universe
- Forrestal - David Conyers and David Kernat's short story "Petrochemical Skies" in David Conyers et al.'s collection Extreme Planets
- Fortis Minor - Robert Sheckley's novel Minotaur Maze, p. 16
- Fortress (moon) - C.L. Anderson's Bitter Angels
- Fortune - Sandra McDonald's The Stars Down Under
- Fortunate Child - James Patrick Kelly's Burn, p. 18
- Foundry - Star Wars universe
- Four-Taurus - Ursula K. Le Guin's Left hand of Darkness, p. 27
- Fourier's World - Maya Kathyrn Bohnhoff's short story "Simple Gifts" Analog January/February 2010
- Fox (47 Ursae Majoris 1) - Allen Steele's Coyote Rising
- France Chance IV - M. John Harrison's Empty Space: A Haunting
- Frastra – Douglas Adams’s The Hitchhiker’s Guide to the Galaxy
- Free Haven - “To the Death,” Star Trek: Deep Space Nine Episode 22, Season 4, 5-13-1996
- Freedom - C.L. Anderson's Bitter Angels, brief reference p. 121
- Freeholm - Dan Simmons’s Hyperion, p. 251
- Fremont - Brenda Cooper's Reading the Wind
- Fresia - Star Wars universe
- Freya - H. Beam Piper's Little Fuzzy, brief reference p. 6
- Freydis - Poul Anderson's For Love or Glory
- Freyja - Poul Anderson's The Long Way Home
- Friedland (German Planet) - Jerry Pournelle's CoDominium Future History
- Friendly - F. Paul Wilson's Enemy of the State
- Frogstar World A – Douglas Adams’s The Hitchhiker’s Guide to the Galaxy
- Frogstar World B – Douglas Adams’s The Hitchhiker’s Guide to the Galaxy
- Frogstar World C – Douglas Adams’s The Hitchhiker’s Guide to the Galaxy
- Frontera - L.E. Modesitt Jr.'s Haze
- Frontios (Veruna system) - Doctor Who universe
- Frost IV - Lois McMaster Bujold's Vorkosigan Saga
- Fruyling’s World - Laurence M. Janifer's Slave Planet
- Fthel IV - Phyllis Gottlieb's Violent Suns
- Fthel V - Phyllis Gottlieb's Violent Suns and Mindworlds
- Frunalia - “Emissary, Part 1,” Star Trek: Deep Space Nine Episode 1, Season 1, 1-3-1993
- Fuji - Dan Simmons’s Hyperion, p. 283
- Fulda - Matthew Hughes's The Other
- Fulgar - John Meaney's To Hold Infinity
- Fulzime Planet - Robert Sheckley's 1966, 1967 Mindswap p. 279
- FunWorld World - Michael Rubens' The Sheriff of Yrnameer
- Furenasyle (Gas Giant) - Iain M. Banks's The Algebraist, p. 136
G[]
- G'iri (Gas Giant) - Iain M. Banks's The Algebraist, p. 300
- Gadmuur - James Swallow's The Latter Fire' (Star Trek: TOS novel)
- Gagarin IV - "Unnatural Selection," Episode 7, Season 3 of Star Trek: The Next Generation, January 30, 1989
- Gaila's Moon - "Civil Defense," Episode 7, Season 3 of Star Trek: Deep Space Nine, November 7, 1994
- Galador - "The Maquis, Part 1," Episode 20, Season 2 of Star Trek: Deep Space Nine April 24, 1994
- Galador II - "The Maquis, Part 2," Episode 20, Season 2 of Star Trek: Deep Space Nine April 24, 1994
- Galantos - Star Wars universe
- Galdonterre - "Blood Oath," Episode 19, Season 2 of Star Trek: Deep Space Nine March 27, 1994
- Galen IV - "Suddenly Human," Episode 4, Season 4 of Star Trek: The Next Generation, October 15, 1990
- Galidraan - Star Wars universe
- Gallam - "The Maquis, Part 1," Episode 20, Season 2 of Star Trek: Deep Space Nine, April 24, 1990
- Gallia - L.E. Modesitt's The Eternity Artifact
- Gallifrey (home planet of the Time Lords) - Doctor Who universe
- Gallos IV - "Darmok," Episode 2, Season 5 Star Trek: The Next Generation August 30, 1991
- Galor IV (Daystrom Technological Institute Annex) - "The Offspring," Episode 16, Season 3 [[Star Trek: The Next Generation] March 12, 1990
- Galorda Prime (Klingon Planet) - "Rules of Engagement," Episode 17, Season 3 Star Trek: Deep Space Nine April 8, 1996
- Galordon Core - "The Enemy," Episode 7, Season 3 Star Trek: The Next Generation November 6, 1989
- Galvin V - "Data's Day," Episode 11, Season 4 Star Trek: The Next Generation January 7, 1991
- Galway - L.E. Modesitt's The Ethos Efect
- Gamelan V - "The Final Mission," Episode 9, Season 4 Star Trek: The Next Generation November 19, 1990
- Gamma (one of three moons of Greentrees) - Nancy Kress's Crossfire
- Gamma Hromi II - "The Vengeance Factor," Episode 9, Season 3 Star Trek: The Next Generation November 20, 1989
- Gamma Hydra 4 - "The Deadly Years," Star Trek: The Original Series Episode 40, Season 2, 12-8-1967
- description Gamma Tauri IV - "The Last Outpost," Episode 4, Season 1 Star Trek: The Next Generation October 19, 1987
- Gamma Trianguli 6 - "The Apple," Star Trek: The Original Series Episode 38, Season 2, 10-13-1968
- Gammon (Ribbon World) - Wil Mccarthy's Lost in Translation, p. 368
- Gamoor - Star Wars universe
- Ganalda IV - "...Nor the Battle to the Strong" Episode 4 Season 5 Star Trek: Deep Space Nine October 21, 1996
- Gand - Star Wars universe
- Ganda – “Man of Imagination,” a short story by E.C. Tubb in Nebula Science Fiction, Volume 2, Issue 20
- Gandji - Michael Berlyn's The Eternal Enemy
- Ganges Heart - C.L. Anderson's Bitter Angels, brief reference p. 121
- Ganzer (a.k.a. Melde) - Robert Sheckley's Mindswap
- Gao - Ursula K. Le Guin's Left hand of Darkness, p. 27
- Garav - Karen Traviss' Ally, Wess'har Wars series novel
- Garden - Dan Simmons’s Hyperion, brief reference p. 146
- Gargantia - Buzz Lightyear of Star Command
- Garissa - Peter F. Hamilton's Night's Dawn Trilogy
- Garon II - "Ensign Ro," Episode 3 Season 5 Star Trek: The Next Generation October 7, 1991
- Garqi - Star Wars universe
- Gatewood (Gas Giant)- Wil McCarthy's Lost in Translation
- Garson's Planet - Robert A. Heinlein's Starman Jones
- Garth - David Brin's Uplift universe
- Gary Thompson's World - Matthew Hughes's Magestrum, Magestrum universe
- Gault (Farm Planet) - "Heart of Glory," Episode 19 Season 1 Star Trek: The Next Generation March 21, 1988
- Gazyr - "The Forbidden Planet," radio episode of Space Patrol
- Gazzali - brief reference in a science fiction short story described in Orhan Pamuk's non-science fiction Snow, Pp. 104-106 (compare to Stygia)
- Gazorpazorp - Raising Gazorpazorp Rick and Morty. March 30, 2014
- Gde - Ursula K. Le Guin's Left hand of Darkness, p. 35
- Gea - Poul Anderson's Firetime
- Geidi Prime - Frank Herbert's Dune and Dune series
- Gehenna - Jay Allan's Gehenna Dawn
- Gehenna - Roger Levin's The Rig
- Gehenna II a.k.a Newport - C.J. Cherryh's Merchanter's Luck
- Gelk - F. Paul Wilson's Enemy of the State
- Gelladorn (R-775-I; Bejoran colony) - David R. George III's Star Trek: The Original Series novel Allegiance in Exile, pp. 317-138
- Gemini - Richard Paul Russo's Inner Eclipse, brief mention p. 55
- Generis - Star Wars universe
- Genesia - Star Wars universe
- Genoa (orbiting Rigel) - Mack Reynold's The Rival Rigellians
- Gentes - Star Wars universe
- Geonosis (Desert Planet) - Star Wars universe
- Germania (moon) - Poul Anderson's Mirkheim and short story "The Warriors From Nowhere," in the collection Sir Dominick Flandry: The Last Knight of Terra
- Gethen a.k.a. Winter Ursula K. Le Guin's The Left Hand of Darkness
- Getty Premium - Ellis Weiner's parody novel National Lampoon's Doon
- Gevira - Sean Williams's "Inevitable," a short story in The New Space Opera 2
- Gezen - C.J. Cherryh's The Faded Sun Trilogy, brief reference, p. 64
- GHC 2990 – Dan Simmons’s Hyperion, brief reference p. 240
- Ghonsilya - - Timothy Zahn's The Third Linx
- Ghorman - Star Wars universe
- Ghost (Gas Giant) - Ian Stewart and Jack Cohen's Heaven (SF novel), brief reference, p. 20
- Gideon - "The Mark of Gideon," Star Trek: The Original Series Episode 72, Season 3, 1-17-1969
- Gienah-9 (desert planet) - Arkady Martine's novel A Memory Called Empire
- Gilgamesh - H. Beam Piper's Space Viking
- Gimli - H. Beam Piper's Space Viking, p. 192
- Ginaz - Dune universe
- Giri - Vernor Vinge's The Witling
- Giskhn 4 - Michael Cobley's Humanity's Fire series, Seeds of Fire, brief reference, p. 327
- Glee Anselm - Star Wars universe
- Gloob - Calvin and Hobbes' Spaceman Spiff planet
- Glorb XIV - Keith Laumer's Retief and the Pangalactic Pageant of Pulchritude, brief reference, p. 4
- Gloria (82 Eridani) - Poul Anderson's short story "The Voortrekkers," in his collection Explorations
- Glory - Gregory Benford's Bowl of Heaven
- Glyptal IV - Isaac Asimov's Foundation, p. 121
- Goat (6th Moon of Bear) - Allen Steele's Coyote Rising
- Gobat - John Barnes's A Million Open Doors
- Goblinrock - Keith Laumer's The Return of Retief, p. 99
- Gobonik - "The Watchmen of Warmok" radio episode of Space Patrol, November 6, 1954
- Gobulus (a Gas Giant orbited by the Terrestrial Moon Sacrecour) - Jack McDevitt's Polaris
- God’s Grove - Dan Simmons’s Hyperion, p. 196
- Godzilla (Epsilon Indi V (Gas Giant)) - Larry Niven's Protector
- Goldblatt's World a.k.a. Barter Nine - Keith Laumer's The Return of Retief, Pp. 67-70, 117
- Goldin IV - Alan Dean Foster's Flinx's Folly
- Golgafrincham - The Hitchhiker's Guide To The Galaxy
- Golgotha - Andy Heizeler's The Grand Illusion: A Dean The Space Rogue Tale," Raygun Revival, Issue 55, December 2009 text
- Golhem - "Landscapes," a short story in Kevin J. Anderson's collection Landscapes, brief reference
- Golos – “The Exiles,” Space 1999 Episode 2, Season 2, 9-11-1976
- Golter - Iain M. Banks' Against a Dark Background
- Good Luck - Poul Anderson's short story The Pirate 1968 Analog
- Goodluck - Adam Rakunas's Windswept, p. 57
- Gorzarg-5 - Calvin and Hobbes' Spaceman Spiff planet
- Gorgzid - John C. Wright's Null-A Continuum
- Gorrazan - Poul Anderson's short story "The Plague of Masters" in the collection Sir Dominic Flandry: The Last Knight of Terra
- Gorth - Andre Norton's novel Star Gate
- Gotland (Scandya System) - L.E. Modesitt's The Ethos Efect
- Gralmond - Peter F. Hamilton's Pandora's Star
- Gram - H. Beam Piper's Space Viking
- Gramarye - Christopher Stasheff's The Warlock in Spite of Himself and King Kobold
- Grand Teton - Alastair Reynold's Revelation Space universe
- Grass - Sheri S. Tepper's Grass
- Grassroots - Keith Laumer's The Glory Game
- Grastius - Adam-Troy Castro's Emissaries From The Dead, p. 21
- Great Gallowan - Matthew Hughes's Magestrum, Magestrum universe
- Green - Alexis Glynn Latner's Hurricane Moon
- Greenleaf - Firefly/Serenity universe
- Greene's World - Elizabeth Bear's Undertow
- Green Lantern World - A History Channel Thanksgiving 15th Season, 13th Episode of South Park November 9, 2011.
- Greentrees - Nancy Kress's Crossfire & Crucible
- Greesovra - Timothy Zahn's The Third Linx
- Griffoth (home planet of the Graske) - "Attack of the Graske," episodes of [Doctor Who]]
- Grimaldo - Jack McDevitt's Polaris, p. 315
- Grims - Matthew Hughes's The Spiral Labyrinthe, Majestrum trilogy
- Grindal - John Scalzi's Old Man's War, brief reference p. 186
- Grizmalt - Star Wars universe
- Grommet - Craig DiLouie's The Great Planet Robbery
- Groombridge 1830 E - James Lovegrove's World of Fire, p. 255
- Grote - Keith Laumer's The Return of Retief
- Grugell - Anderson Gentry's The Crider Chronicles
- Grundle (Swamp Planet) - "Carnival of Monsters," episodes of Doctor Who
- Grzydc - Carmen Carter's The Children of Hamlin (a Star Trek: The Next Generation novel), p. 43
- Gryphon (Manticore B IV) - David Weber's On Basilisk Station, Honorverse
- Guillarin - Scot Noel's short story Restorations in Dark Planet 11-2-2001
- Gulagatraz (Prison Planet - Robert Kroese's Starship Grifters'
- Gulltopp (moon of Neweden) - Stephen Leigh's Dance of the Hag
- Gummidgy - "The Handicapped," and "Grendel," short stories in Larry Niven's Neutron Star
- Gumpalt - Brian Aldiss's Starswarm, p. 96
- Guna - Gill Anderson's The Archivist
- Gurgain (Mining Planet) - C.J. Cherryh's The Faded Sun Trilogy, p. 280
- Gwo (Mining Planet) - John Brunner's Interstellar Empire
- Gyndine - Star Wars universe
- Gyonne - Kristine Kathryn Rusch's Recovery Man, a Retrieval Artist series novel
H[]
- H'nemthe - Star Wars universe
- Ha’ktyl – “Sacrifices,” Stargate SG-1 Season 8
- Hablu - Raymond F. Jones & Lester del Rey's Weeping May Tarry, p. 169
- Hac Demil - Karen Traviss's Ally, a Wess'har Wars series novel, minor reference, p. 34
- Had Abaddon - Star Wars universe
- Hadante - "Prisoners," Stargate SG-1, Season 2
- Hades - Frederick Pohl's Stopping at Slowyear
- Hades (Gas Giant) - James Gunn's Transcendental universe, orbited by the moon Hell
- Hadrian Secundus - David Conyers and David Kernot's short story "Petrochemical Skies" in David Conyers et al.'s collection Extreme Planets
- Hadriu - C.J. Cherryh's The Faded Sun Trilogy, brief reference, p. 64
- Hain - Ursula K. Le Guin's Left hand of Darkness, p. 35
- Hajj Majora - L.E. Modesitt's The Eternity Artifact, Pp. 11-12
- Hakham - Sean Williams's "Inevitable," a short story in The New Space Opera 2
- Hakol - "The Awakening," episodes of Doctor Who
- Halcyon - Robert A. Heinlein's Starman Jones
- Halford - John Scalzi's Old Man's War
- Halifax - Craig DiLouie's The Great Planet Robbery
- Halvmörk - Harry Harrison's Wheelworld
- Hamlin (Mining Planet) - Carmen Carter's The Children of Hamlin (a Star Trek: The Next Generation novel)
- Hammarskjold - John Barnes's A Million Open Doors universe
- Hammersmith II - James Blish's short story "Beep" in Galaxy, February 1954
- Hamshiltristia - Timothy Zahn's Night Train to Rigel
- Han - Norman Spinrad's The Void Captain's Tale
- Handooine - Star Wars universe
- Hanka - “The Rite of Passage,” Stargate SG-1 Season 5
- Hannebrink IV -- Robert Silberberg and Randall Garrett's short story "Catch a Thief" in their collection A Little Intelligence
- Hanon IV - Star Trek: Voyager (primitive planet)
- Hapes - Star Wars universe
- Harith - Anne Gay's To Bather In Lightning
- Harlan's World - Richard K. Morgan's Altered Carbon
- Harlemond - Matthew Hughes's Magestrum, Magestrum universe
- Harlequin (Gas Giant) - Larry Niven and Brenda Cooper's Building Harlequin's Moon
- Harmonia - Robert Sheckley's Options
- Harmonia 7 –“Aliens, Guns and A Monkey,” Tripping the Rift, Season 1
- Harmonious Repose - Vernor Vinge's A Fire Upon the Deep
- Harmony - Spider Robinson's Callahan's Key, p. 101
- Haruun Kal ("Above the Clouds") - Star Wars universe
- Harvest (planet or moon) - Firefly/Serenity universe
- Haskin's Planet - Robert Asprin's Phule's Paradise
- Hastromil - Douglas Adams' The Hitchhiker's Guide To The Galaxy
- Hatturat - Garth Nix's "Punctuality," a short story in The New Space Opera 2
- Haulteclere - H. Beam Piper's Space Viking
- Haven - Isaac Asimov's Foundation and Empire, p. 90-91
- Haven a.k.a. Elag - C.J. Cherryh's The Faded Sun Trilogy
- Haven - "Justice," Star Trek: The Next Generation Episode 10, Season 1, 11-30-1987
- Haven - David Weber's On Basilisk Station, Honorverse
- Haven - Elizabeth A. Lynn's A Different Light
- Haven (a.k.a. Alpha Centauri B II; a.k.a. Ramachandra's World) - Chris Roberson's Further: Beyond the Threshold
- Haven - Firefly/Serenity universe
- Hawk (2nd Moon of Bear) - Allen Steele's Coyote Rising
- Hayek - L.E. Modesitt, Jr.'s The One-Eyed Man, brief reference
- Hazard - Don D'Ammassa's Narcissus
- Haze - L.E. Modesitt Jr.'s Haze
- He - James Blish's Earthman, Come Home, Ciites in Flight universe
- Heartsease - Roger Levy's The Rig', p. 140
- Hearth - Larry Niven & Edward M. Lerner's Fleet of Worlds
- Heaven - Futurama
- Heaven (condomimium) - Paul Cornel's Love and War Doctor Who novel
- Heaven’s Gate (Vega star system)– Dan Simmons’s Hyperion, p. 187
- Heavenly Mountains (GO-8703-IV) - Robert A. Heinlein's Tunnel in the Sky p. 20
- Hebridan (Celtic Planet) – “Forsaken,” Stargate SG-1 Season 6
- Hebron (Jewish Planet) - Dan Simmons’s Hyperion, Pp. 12, 141, 252; Hyperion Cantos
- Hegira - Greg Bear's Hegira
- Heimat - Norman Spinrad's The Void Captain's Tale, p. 44
- Heinlein (Gas Giant) - Firefly/Serenity universe
- Hekate - Robert A. Heinlein's Citizen of the Galaxy
- Hekla (Arctic Planet) - Hal Clement's short story "Cold Front," Astounding, July 1946
- 'Hel - L.E. Modesitt's The Eternity Artifact, p. 79
- Helicon - Forward the Foundation
- Helion Prime a.k.a. "New Mecca" - The Chronicles of Riddick 2004 Film
- Helior - Harry Harrison's Bill, the Galactic Hero
- Hell (home planet of the Helkans) - "Emperor of the Daleks," episodes of Doctor Who
- Hell (moon orbiting Hades) - James Gunn's Transcendental
- Hellhole (DQN 1196) - Peter David's Strike Zone, a Star Trek Next Generation novel, Pp. 72-73
- Hellhole - Brian Herbert and Kevin J. Anderson's novel Hellhole
- Helliconia - Brian Aldiss's The Helliconia Trilogy
- Helmand - Thomas Harlan's Land of the Dead
- Helska IV - Star Wars universe
- Helvanti - Timothy Zahn's The Third Lynx
- Helvetica - John Kessel's short story "Events Preceding the Helvetican Renaissance," in The New Space Opera 2
- Hemlock - Alastair Reynolds's Pushing Ice
- Hennessy's World - Una McCormack's Star of the Sea, p. 119 (Weird Space universe)
- Henth - Anneke Jacob's Owned and Owner
- Hephaistos - Andromeda televison series
- Hera - Firefly/Serenity universe
- Herculon - Rocky Jones, Space Ranger TV series, 1954.
- Hermes (orbits star Maia) - Poul Anderson's Mirkheim
- Hermes - David Brin's Startide Rising p. 50
- Hermes - Unarius (UFO Religion)
- Herperos - Isaac Asimov's Robots and Empire
- Hesperus - Robert A. Heinlein's Starship Troopers p. 174
- Hertha - H. Beam Piper's Space Viking, brief reference p. 55
- Hideaway - David S. Garnett's Bikini Planet
- Higgin' Moon - Firefly/Serenity universe
- Higgins' Planetoid - "The Dangerous Discovery," television episode #32 of Space Patrol, August 4, 1951
- High Lab - Vernor Vinge's A Fire Upon the Deep
- Highgate (planet or moon) - Firefly/Serenity universe
- Hiigara - Homeworld computer game
- Hilary - Ian Stewart and Jack Cohen's Heaven (SF novel), brief reference, p. 20
- Hip 263c - Andy Dudak's "Human System", a short story in Raygun Revival, September 22, 2012
- Hippolyte - Robert A. Heinlein & Spider Robinson's Variable Star, brief reference p. 28
- Hive, a.k.a. Huxley's Haven - Peter F. Hamilton's Pandora's Star, p. 272
- Hivehom - Alan Dean Foster's Humanax Commonwealth universe
- Hleems - Brian Aldiss' The Eighty Minute Hour
- Hobo 13 - Invader Zim cartoon series
- Hocotate - Pikmin, Pikmin 2
- Hogarth's World (a.k.a. Hoggie) - Elizabeth Bear's Undertow, p. 246
- Hoggie (a.k.a. Hogarths's World) - Elizabeth Bear's Undertow, p. 246
- Hok - Star Wars universe
- Hokaar - James Swallow's The Latter Fire' (Star Trek: TOS novel)
- Holat - poul Anderson's The Long Way Home
- Holman's World a.k.a. Belzagor - Robert Silverberg's Downward to the Earth
- Holycow - Matthew Hughes's The Other
- Home (Epsilon Indi II) - Larry Niven's Protector
- Home, sister planet of Shame - Scott Westerfeld's The Risen Empire
- Home - Pamela Sargent's Seed Seeker
- Homer - Richard Paul Russo's Inner Eclipse, brief mention p. 70
- Honch - Matthew Hughes's Magestrum, Magestrum universe
- Honoghr - Star Wars universe
- Hooper - Neal Asher's The Skinner
- Hopara - Isaac Asimov's Prelude to Foundation
- Hope - Ytasha L Womack's Rayla 2212
- Hopewell - Poul Anderson's Polesotechnic League universe
- Hoppaz II - Brian W. Aldiss' Bow Down to Nul
- Horlegor - Isaac Asimov's Foundation and Empire, p. 128
- Horm - Matthew Hughes's Magestrum, Magestrum universe
- Horseye - Alan Dean Foster's Voyage to the City of the Dead
- Horst - David Brin's Uplift universe
- Hospital (moon) - C.L. Anderson's Bitter Angels
- Hoth (Arctic Planet) - Star Wars universe
- Hoth - H. Beam Piper's Space Viking
- Hovering Squid-world 97a - Futurama universe
- Hraggellon a.k.a. - John Morressy's Frostworld and Dreamfire
- Hrullwelt - Rudy Rucker's Hylozoic
- Hub - John Scalzi's novel The Collapsing Empire
- Huckleberry - John Scalzi's The Last Colony and Zoe's Tale
- Hudlar (high gravity world) - James White's Hospital Station
- Huguinn (Terrestrial Moon) - Wendy N. Wagner's An Oath of Dogs
- Hulle - Matthew Hughes's Magestrum, Magestrum universe
- Hurmuptha - David Brin's Heaven's ReachUplift Series, p. 543
- Hurria - "The Gentle Vultures," a short story in Isaac Asimov's collection Nine Tomorrows
- Hutchinson Colony - Babylon 5 universe
- Hull (Arctic Planet and double planet with Addams) - John Barnes's A Million Open Doors universe
- Husnock Prime - David Mack's Fortune of War (Star Trek: Titan universe), p. 278
- Huxley's Haven, a.k.a. Hive - Peter F. Hamilton's Pandora's Star, p. 272
- Huzz - Lloyd Biggle Jr.'s The Rule of the Door
- Hyderabad - Sean Williams's Saturn Returns
- Hydros (Ocean Planet) — Robert Silverberg's The Face of the Waters
- Hydrot (Ocean Planet) - James Blish's short story "Surface Tension" in Galaxy August 1952
- Hydrot (Ocean Planet) - Paul McAuley's Into Everywhere, p. 207
- Hyff - Alan Dean Foster's The Candle of Distant Earth
- Hyndji L.E. Modesitt's The Ethos Efect
- Hynn - John Scalzi's The Android's Sheep, brief reference, p. 346
- Hypori - Star Wars universe
I[]
- Ia - James White's Star Surgeon, p. 213
- Ian-apof - Timothy Zahn's The Third Linx, p. 88
- Ibarra - Richard Paul Russo's Inner Eclipse, brief mention p. 55
- Icarus - Elizabeth A. Lynn's A Different Light
- Ice World - Larry Niven & Edward M. Lerner's Fleet of Worlds
- Icebox Nine (arctic planet) - Keith Laumer's The Return of Retief
- Icelanise (Gas Giant) - Peter F. Hamilton's Pandora's Star, p. 290
- Icheis - Iain M. Banks's Excession, p. 93
- Ida (moon of Chronos) - Poul Anderson's Mirkheim
- Idir - Iain M. Banks' Consider Phlebas
- Iego - Star Wars universe
- Ifni - Isaac Asimov's Second Foundation, Foundation universe
- Ifnia - Isaac Asimov's Second Foundation, Foundation universe
- Iji - C.J. Cherryh's The Chanur Saga
- Ikrananka - Poul Anderson's 'Polesotechnic League universe, "The Trouble Twisters"
- Iktochon - Star Wars universe
- Ilidio - Kathryn Kristine Rusch's Paloma
- Ilium (moon) - "Sucker Bait," a short story in Isaac Asimov's collection The Martian Way and Other Stories, brief reference
- Illyrica - Lois McMaster Bujold's Vorkosigan Saga
- Illyricum (terraformed planet) - Walter Jon Wlliams's Aristoi
- Ilum (Arctic Planet) - Star Wars universe
- Imhotep (Arctic Planet) - H. Beam Piper's Space Viking, p. 116
- Indi - A History Channel Thanksgiving 15th Season, 13th Episode of South Park November 9, 2011.
- Inferno - Roger Allen MacBride's Isaac Asimov's Inferno (set in Asimov's Robot universe)
- Inferno - Robert A. Heinlein's Time for the Stars
- Ingold - Meryl Ferguson's short story "The Hyphal Layer" in David Conyers et al.'s collection Extreme Planets
- Ingraham B - "Operation Annihilate!" Star Trek: The Original Series Episode 29, Season 1, 4-13-1967
- Ingstel - Robert A. Heinlein's Citizen of the Galaxy
- Inshai a.k.a. Sigma 1014 Orionis - Diane Duane's Spock's World (Star Trek Novel), pp. 38-39
- Inspir (Arctic Planet) - John Scalzi's The Android's Sheep, p. 222
- Inter Minor - "Carnival of Monsters," episodes of Doctor Who
- Intinogurzibeshilaha - Brian Aldiss's Starswarm, p. 39
- InVestCo 3 - Michael Rubens' The Sheriff of Yrnameer
- InVestCo 23 (X'xx-x) - Michael Rubens' The Sheriff of Yrnameer
- Ipocrene - Brian Aldiss's The Helliconia Trilogy
- Iras (mmon of Cleopatra) - Poul Anderson's A World Named Cleopatra
- Iris - Carolyn Ives Gilman's Dark Orbit
- Iridonia - Star Wars universe
- Irminsul - H. Beam Piper's Space Viking, p. 114
- Irumclaw - Poul Anderson's Ensign Flandry and A Circus of Hells
- Isheimur (Arctic Planet) - Colin Harvey's Winter Song
- Ishtar, a.k.a. Bel III, a.k.a. Anubelea III - Poul Anderson's Firetime
- Ishtar - H. Beam Piper's Space Viking
- Ishtar - H. Beam Piper's Little Fuzzy, brief reference p. 6
- Iskander - Robert A. Heinlein's Starship Troopers
- Iseri - Michael Cobley's Humanity's Fire series
- Isis (Procyon II) - L. Sprague de Camp's collection The Continent Makers
- Isis - H. Beam Piper's Space Viking
- Isitra Colony First - Dave Galanter's Troublesome Minds
- Isitra Zero - Dave Galanter's Troublesome Minds
- Iskander - Robert A. Heinlein's Starship Troopers, "around Proxima" p. 1
- Ison - Star Wars universe
- Iss - Isaac Asimov's Foundation and Empire
- Issorile (home planet of the Affront') - Iain M. Banks's Excession, Culture universe
- Iszm — Jack Vance's The Houses of Iszm
- Ita (moon) - Firefly/Serenity universe
- Ithavoll - H. Beam Piper's Space Viking, p. 162
- Ithliss-Tor - Ann Aguirre's Wanderlust
- Ithor - Star Wars universe
- Ithunn - H. Beam Piper's Space Viking, p. 126
- Ivanhoe - Poul Anderson's Polesotechnic League universe
- Ix (machine shop planet) - Brian Herbert's Dune universe
- Ix-Nay - Ellis Weiner's National Lampoon's Doon
- Ixno - Donald Kinsbury's Psychohistorical Crisis (set in Asimov's Foundation universe)
- Iyangura 281 A - David Conyers and David Kernot's short story "Petrochemical Skies" in David Conyers et al.'s collection Extreme Planets
- Iyax - Phyllis Gottlieb's Violent Suns and Mindworlds
J[]
- J't'p'tan - Star Wars universe
- Jaarfindor - Sean Wright's The Twisted Root of Jaarfindor
- Jaconda - "The Twin Dilemma" episodes of Doctor Who
- Jabiim - Star Wars universe
- Jackson's Whole - Lois McMaster Bujold's Vorkosigan Saga
- Jacob's Folly - Mike Moscoe's The Price of Peace
- Jagan - Thomas Harlan's novel [[[Thomas Harlan]]'s novel House of Reeds, p. 22
- Jagganth - H. Beam Piper's Space Viking
- Jaglan Beta - Hitchhiker's Guide To The Galaxy
- Jagranath - Poul Anderson's short story "The Warriors From Nowhere," in the collection Sir Dominick Flandry: The Last Knight of Terra
- Janos VII - Babylon 5 universe
- Janus 6 (Mining Planet and Horta homeworld) - "The Devil in the Dark," Star Trek: The Original Series Episode 26, Season 1, 3-9-1967; Diane Duane's Spock's World (Star Trek novel), p. 26
- Jast - Alan Dean Foster's Sliding Scales
- Jawbone - Keith Laumer's Retief and the Warlords, brief reference, p. 173
- Jean – Mark Stanley's webcomic Freefall
- Jeep - Nicola Griffith's Ammonite
- Jefferson III - Mike Resnick's A Miracle of Rare Resign
- Jennisek - Isaac Asimov's Prelude to Foundation
- Jericho 3 - "In The Beginning" episode of Babylon 5
- Jerusalem - Charles Coleman Finlay's "The Political Prisoner," The Magazine of Fantasy and Science Fiction August 2008
- Jewell - Robert Asprin's Phule's Paradise
- Jiangyin - Firefly/Serenity universe
- Jijo - David Brin's Brightness Reef
- Jinx - Anderson Gentry's A Sky of Diamonds
- Jinx - Larry Niven's World of Ptavvs, Protector brief reference, "Neutron Star," "A Relic of the Empire," "At the Core," "The Soft Weapon," "Flatlander," "The Ethics of Madness," "The Handicapped," and "Grendel," short stories in Larry Niven's collection Neutron Star
- Jm'ho (icy moon and Gw'oth homeworld) - Larry Niven and Edward M. Lerner's novel Destroyer of Worlds, Ringworld universe
- Jo-Ad - Buzz Lightyear of Star Command animated television series
- Joao (moon), a.k.a. New Phobos - Robert A. Heinlein & Spider Robinson's Variable Star
- Jobis - Peter F. Hamilton's Night's Dawn Trilogy
- Johnpiter (faux planet named in a novel) - Wil McCarthy's Bloom
- Jonn - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Jonna - Poul Anderson's For Love and Glory
- Jophekka World - David Brin's Infinity's Shore, p. 123
- Jordan Mining Planet - Craig DiLouie's The Great Planet Robbery
- Jove II - Dan Simmons’s Hyperion, p. 191
- Joyeuse - H. Beam Piper's Space Viking
- Jubbul - Robert A. Heinlein's Citizen of the Galaxy
- Judgementia - Invader Zim cartoon series
- Julia (Gas Giant) - Poul Anderson's A World Named Cleopatra
- Jun - Nancy Kress's Crucible
- Juna a.k.a. PX3-989 – “Double Jeopardy,” Stargate SG-1 Season 4
- Junction - Charles E. Gannon's Fire With Fire
- Junior - "Sucker Bait," a short story in Isaac Asimov's The Martian Way and Other Stories
- Junya IV - Margaret Ball's Disappearing Act, brief reference, p. 179
- Jurskala - Timothy Zahn's Night Train to Rigel
- Justicia (entire system of Prison Planets) - Stephen Cole's The Monsters Inside Doctor Who novel
- Juthtath - David Brin's Uplift universe
K[]
- K-2, a.k.a. Kevarzangia - S.L. Viehl's Afterburn
- K-Pax – K-Pax film
- K'erem - Alan Dean Foster's The Light Years Beneath My Feet
- Kaesov - Doctor Who universe
- Kaihapa (a twin Ocean Planet) - Hal Clement's Noise
- Kainui (a twin Ocean Planet) - Hal Clement's Noise
- Kalgash - Isaac Asimov's Nightfall
- Kakakakkaxo - Brian Aldiss's Starswarm, p. 54
- Kakrafoon - Hitchhiker's Guide To The Galaxy
- Kalaban - Jack Campbell's novel Dauntless, The Lost Fleet universe
- Kalapriya - Margaret Ball's Disappearing Act
- Kalee - Star Wars universe
- Kalgan (semi-tropical pleasure planet) - Isaac Asimov's Foundation and Empire, p. 93, Foundation universe
- Kalist VI - Star Wars universe
- Kamino - Star Wars universe
- Kanagawa - Richard K. Morgan's Altered Carbon
- Kapetyn - Ursula K. Le Guin's Left hand of Darkness, p. 35
- Kappa - Fred Saberhagen's The Water of Thought
- Kappas - Brian Herbert and Kevin J. Anderson's Hellhole
- Kapteyn - C.J. Cherryh's Merchanter's Luck
- Karadakk - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Karaxe - William B. Dunn's Escape from Planet Karaxe
- Karfel - "Timelash" episodes of Doctor Who
- Karn - "The Brain of Morbius" episodes of Doctor Who
- Karn - Buzz Lightyear of Star Command animated television series
- Karn - Dr. Who universe
- Karst - Rebeca Ore's Human to Human, (third novel in the Becoming Alien trilogy)
- Karum and Kanes - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Kashyyyk - Star Wars universe
- Kashyyyk Moon - Star Wars universe
- Kasterborus the Fibster - Doctor Who universe
- Kastria (home planet of the Eldrad) - Doctor Who universe
- Katarr - Star Wars universe
- Katel's World - Tad Williams's short story "The Tenth Muse" in The New Space Opera 2
- Kazo - Piers Anthony's Triple Detente
- Keep Enable - Dan Simmons’s Hyperion, p. 196
- Kegron Pluva - Only Human Doctor Who novel
- Keks-Varley III - M. John Harrison's Empty Space: A Haunting, brief reference
- Kelchase - Star Wars universe
- Kellac – “In Loving Memory,” a short story by James White in Nebula Science Fiction, Volume 2, Issue 15.
- Kembel – “Mission to the Unknown,” Doctor Who Season 3, Story Number 19, 10-9-1965; “The Dalek’s Master Plan,” Season 3, Story Number 21
- Kendrick Five-A - "Landscapes," a short story in Kevin J. Anderson's collection Landscapes, brief reference
- Kenning (Theta Persei System) - James Patrick Kelly's Burn, p. 106
- Kepler 22b - "Heaven," short story by Janet Shell Anderson at Daily Science Fiction.
- Kepler 22b - 'Raised by Wolves" HBO series
- Kepler Colony Gary Gibon's Final Days
- Kerfsis - Timothy Zahn's Night Train to Rigel
- Kerkorian - Donald Kinsbury's Psychohistorical Crisis (set in Asimov's Foundation universe), p. 86
- Kesrith (Desert Planet) - C.J. Cherryh's The Faded Sun Trilogy
- Kerry (planet or moon) - Firefly/Serenity universe
- Keshewan - Thomas Harlan's novel House of Reeds, pp. 73, 123
- Kessel - Star Wars universe
- Kevarzangia, a.k.a. K-2 - S.L. Viehl's Afterburn
- Khagodis - Phyllis Gotlieb's Mindworlds
- Khankri - Garth Nix's "Punctuality," a short story in The New Space Opera 2
- Khasepea - Garth Nix's "Punctuality," a short story in The New Space Opera 2
- Khatka - Andre Norton's Voodoo Planet
- Khepera - H. Beam Piper's Space Viking
- Khitomer - Keith R.A. Decandido's Star Trek: A Time for War, A Time for Peace
- Khomm - Star Wars universe
- Khriastros - L.E. Modesitt Jr.'s Haze
- Kibou-daini - Lois McMaster Bujold's Vorkosigan Saga
- Kiffu - Star Wars universe
- Kilgar - faux fictional planet in Tracy Morgan's "Astronaut Jones Episode 6" skit on Saturday Night Live Season 34, Episode 18
- Kilran (Gas Giant) - James Gunn's Transcendental, p. 147
- Kilroy - Craig DiLouie's The Great Planet Robbery
- Kiluwa - C.J. Cherryh's The Faded Sun trilogy
- Kingdom - David Sherman & Dan Cragg's A World of Hurt
- Kinslik (Toolie home world) - Don DeBrandt's novel Viral Intelligence
- Kintan - Star Wars universe
- Kinyen - Star Wars universe
- Kirbo III - Star Wars universe
- Kirith - Doctor Who universe
- Kirsi - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Kirkasant - "Starfog," short story in Poul Anderson's Beyond the Beyond
- Kitara - Derek Künsken's novel Quantum Magician, p. 422
- Kithrup - David Brin's Startide Rising
- Klairos - Majlis Larson's Pawns and Symbols
- Klatooine - Star Wars universe
- Klendathu - Robert A. Heinlein's Starship Troopers
- Klief - Brian Herbert and Kevin J. Anderson's 'Hellhole universe
- Klist - Doctor Who universe
- Klom - Doctor Who universe
- Kobol – “Kobol’s Last Gleaming, Part 1” and “Kobol’s Last Gleaming, Part 2,” Battlestar Gallactica, Season 1; “Home, Part 1” and “Home, Part 2,” Battlestar Gallactica, Season 2
- Kodar (located in the Draco Cluster) Alien Trespass 2009 film
- Kolo - James Patrick Kelly's Burn, p. 16
- Komarr - Lois McMaster Bujold's Vorkosigan Saga
- Komran (terrestrial moon orbiting Kilran) - James Gunn's Transcendental, p. 147
- Konom - Isaac Asimov's Foundation
- Koozebane - The Muppet Show
- Koppawanda - Jack McDevitt's Polaris
- Korell - Isaac Asimov's Foundation
- Korgul - Thomas Harlan's novel House of Reeds, p. 55
- Koros Minor - Star Wars universe
- Korriban (Horuset System) - Star Wars universe
- Korval - Jack McDevitt's Polaris, brief reference p. 175
- Korwar - Andre Norton's Forerunner Foray
- Kothliss - Star Wars universe
- Kotopaxi - Thomas Harlan's House of Reeds, p. 115
- Korsve - Kristine Kathryn Rusch's novel The Disappeared
- Korvel - L.E. Modesitt's The Ethos Effect
- Korwar - Andre Norton's Masks of the Outcasts
- Kosatka - Jack Campbell's Dauntless, The Lost Fleet universe
- Koyo - Natural City 2003 film
- Kra'au - Robert Kroese's Starship Grifters', brief reference
- Krako Six - Keith Laumer's The Return of Retief, brief reference p. 145
- Krako Eight - Keith Laumer's Retief and the Pangalactic Pageant of Pulchritude, brief reference p. 18
- Kralkor II - "A Walk in the Dark," a short story in Arthur C. Clarke's Reach for Tomorrow, brief mention
- Kregan - Alan Burt Akers, a.k.a. Kenneth Bulmer's Transit to Scorpio
- Kria - Hitchhiker's Guide To The Galaxy
- Krikkit - Hitchhiker's Guide To The Galaxy
- Krishna (Tau Ceti II) - L. Sprague de Camp's collection The Continent Makers and Cosmic Manhunt
- Krokodil - M. John Harrison's Empty Space: A Haunting, brief reference, p. 195
- Krop Tor (a.k.a. The Bitter Pill orbits a black hole) - "The Impossible Planet" and "The Satan Pit" episodes in Doctor Who
- Kropotkin - Mack Reynolds' Planetary Agent X
- Krupp Reich a.k.a. New Germany - Scott Westerfeld's The Risen Empire, p. 78
- Kryder II - Murray Leinster's "Plague on Kryder II," a short story in his collections Quarantine World and Med Series.
- Krynoid - Doctor Who universe
- Krypton - Birth planet of Superman
- Ktar - Keith R.A. Decandido's Star Trek: A Time for War, A Time for Peace
- Kuat - Star Wars universe
- Kukulkan - L. Sprague de Camp and Catherine Crook de Camp's The Stones of Nomuru
- Kulath II - "Rescue Party," a short story in Arthur C. Clarke's collection Reach for Tomorrow
- Kultis - Gordon R. Dickson's novel The Chantry Guild (Childe Cycle)
- Kuhurn (same star system as Gethen/Winter) - Ursula K. Le Guin's The Left Hand of Darkness, p. 139
- Kunene - M. John Harrison's Empty Space: A Haunting, pp. 102-105
- Kusam - Raymond F. Jones & Lester del Rey's Weeping May Tarry, p. 169
- Kuxortal - Andre Norton's Forerunner
- Kylera - L.E. Modesitt's The Ethos Effect
- Kyleria (alternative spelling) - L.E. Modesitt's The Ethos Effect
- Kyoto - John Scalzi's Zoe's Tale
- Kystran - Johanna Lindsey's Warrior's Woman
- Kythanil - Cthulhu Mythos
L[]
- La Gonave - Richard A. Lupoff's "With the Bentfin Boomer Boys," a short story in Harlan Ellison's collection Again, Dangerous Visions, Pp. 618-701
- La Nueva Temporada - Ben Jeapes's Phoenicia's World
- Laarmiten - Timothy Zahn's The Third Linx
- Labura, a.k.a New Earth, a.k.a. Procyon VIII - Robert Silverberg's Master of Life and Death, pp. 119, 198
- Lagash - Isaac Asimov's short story Nightfall text
- Lagrima - Richard Paul Russo's The Rosetta Code
- Lairouba - Lois McMaster Bujold's Vorkosigan Saga
- Lakertya - "Time and the Rani" episodes of Doctor Who
- Landomar - Poul Anderson's World Without Stars
- Lapolbius - "Cuppid's Dagger" episode of The Orville television series
- Larka - E.M. Busby's The Proud Enemy, p. 44
- Lascarious (terraformed planet) - Walter Jon Wlliams' Aristoi
- Last Chance - Anderson Gentry's A Sky of Diamonds
- Lasthope - Poul Anderson's "Kyrie," a short story in Joseph Elder's collection The Farthest Reaches
- Latimer - Richard K. Morgan's Altered Carbon
- Lavinius 5 - "Operation Annihilate!" Star Trek: The Original Series Episode 29, Season 1, 4-13-1967
- Laylora - Colin Blake's The Price of Paradise, Doctor Who universe
- Lea - George Zebrowski's Macrolife: A Mobile Utopia
- Lemminkainen - Poul Anderson's Satan's World
- Lepidus (Gas Giant) - Poul Anderson's A World Named Cleopatra
- Leria Kerlsil - Star Wars universe
- Leseum 9 - Iain Banks's The Algebraist, p. 74
- Lessanar - Susan Wright's Sins of Commission, a [[Star Trek: The Next Generation] novel
- Leucifer V - Brian Stableford's The Fenris Device, Hooded Swan universe
- Lexicon - WordGirl PBS children's television series
- Lexis XV - Scott Westerfeld's The Risen Empire
- Ley - Elizabeth A. Lynn's A Different Light
- Leynstyr - L.E. Modesitt's The Ethos Efect
- Lianna - Star Wars universe
- Liaden (Celtic Planet) - L.E. Modesitt's The Eternity Artifact, p. 15
- Liann Jiun (planet or moon) - Firefly/Serenity universe
- Libair - Isac Asimov's The Currents of Space
- Ligon II - "Code of Honor," Star Trek: The Next Generation Episode 3, Season 1, 10-12-1987 description
- Lil (one of 7 moons of World) - Nancy Kress's Probability Moon
- Lilac - Firefly/Serenity universe
- Lilistar - Philip K. Dick's novel Now Wait for Last Year
- Lilith - Jack L. Chalker's The Four Lords of the Diamond series
- Lilith - G. McDonald Wallis's The Light of Lilith
- Limbo - Andre Norton's Plague Ship and Sargasso of Space
- Lingane - Isaac Asimov's The Stars Like Dust
- Lingo-Three - Kurt Vonnegut's Breakfast of Champions
- Linnisfarne - Don D'Ammassa's Narcissus
- Lithia - Don D'Ammassa's Haven, brief reference, p. 32
- Lithia - James Blish's A Case of Conscience
- Little Warsaw (a.k.a.16 Cygni Bb) - James Lovegrove's World of Fire
- Livia - Isaac Asimov's Foundation and Earth, Foundation universe
- Llyene - C.J. Cherryh's The Chanur Saga
- Lobos - "The Space Pirates" episodes of Doctor Who
- Locris - Isaac Asimov's Second Foundation
- Logarto - Warren Hammond's KOP
- Logopolis - "Logopolis" episodes of Doctor Who
- Lok - Star Wars universe
- Loki - H. Beam Piper's Little Fuzzy, brief reference
- Londinium - Firefly/Serenity universe
- Loocen (largest moon of Jijo) - David Brin's Infinity's Shore, Uplift universe
- Lorca - John Vornholt's Masks, a Star Trek: The Next Generation novel
- Lorigon - Bestia nello spazio, La (The Beast in Space) 1980 film
- Loris - Isaac Asimov's Foundation and Empire, p. 97
- LornaDo - Mike Moscoe's The Price of Peace
- Los Vada - Peter F. Hamilton's Pandora's Star
- Losian - Robert A. Heinlein's Citizen of the Galaxy
- Lotarf - Robert A. Heinlein's Citizen of the Galaxy
- Lothal - Star Wars universe
- Lothian - Peter F. Hamilton's Pandora's Star, p. 254
- Loudor - John Brunner's Interstellar Empire
- Lucifer - "Bad Wolf" episode of Doctor Who
- Lugaluru - H. Beam Piper's Space Viking
- Lumbaga - Keith Laumer's Retief and the Pangalactic Pageant of Pulchritude
- Lunar V “The Hunted,” Star Trek: The Next Generation Episode 11, Season 3, 1-8-1990
- Lurion - Robert Silverberg's The Planet Killers
- Lusitania – Orson Scott Card’s Speaker for the Sequel
- Lusus - Dan Simmons’ Hyperion, Pp. 13-14
- Luton – “The Rules of Luton,” Space: 1999 Episode 7, Season 2, 10-21-1976
- Lwhekk - Star Wars universe
- Lyhrr - Phyllis Gotlieb's Mindworlds
- Lyonese - Isaac Asimov's Foundation and Empire
- Lyr (Celtic Planet) - L.E. Modesitt's The Eternity Artifact, p. 15
- Lys - Kristine Kathryn Rusch's short story "Defect" in The New Space Opera 2
- Lyra VI - "That Share of Glory," a short story by C.M. Kornbluth, Astounding, 1952
- Lystera - Isaac Asimov's Forward the Foundation
- Lythion - Barbarella 1968 film, Musical & Comic Book
M[]
- 4th Moon of Mab Guul - "Of Cannibals and Cuddle Puffs" episode of Outer Space Astronauts television series, 12-15-2009
- M113 - "The Man Trap," Star Trek: The Original Series Episode 6, Season 1, 9-8-1966
- M'hlyr - Iain M. Banks' Against a Dark Background
- Mab Guul (deduced) - "Of Cannibals and Cuddle Puffs" episode of Outer Space Astronauts television series, 12-15-2009
- Madhya (colony of Parvati) - Dan Simmons’ Hyperion, p. 332
- Madrona - “Touchstone,” Stargate SG-1 Season 2
- Magellan - M. John Harrison's Empty Space: A Haunting, brief reference p. 95
- Magnificence - Roger Levy's The Rig', p. 140
- Magrathea - Douglas Adams' Hitchhiker's Guide To The Galaxy
- Mahamba 6 (Vacation Planet) - Buzz Lightyear of Star Command animated television series
- Maidservant (moon of Golter) - Iain M. Banks' Against a Dark Background
- Maioplar - David Brin's "The Diplomacy Guild," a short story in Isaac's Universe Volume One
- Makassar - Jerry Pournelle's King David's Spaceship
- Makumba - Jack McDevitt's Polaris
- Mala (Ribbon World)- Larry Niven and Edward M. Lerner's novel Destroyer of Worlds, Ringworld universe
- Malachor V - “Star Wars: Knights of the Old Republic,” Star Wars Videogame
- Malar's (Planet) - Robert Kroese's Aye Robot: A Rex Nihilo Adventure
- Malarchium - Robert Kroese's novella Aye Robot: A Rex Nihilo Adventure, p. 175
- Malastare - Star Wars universe
- Malmot (Scandya System) - L.E. Modesitt's The Ethos Efect
- Malur - Christopher L. Bennett's novel Tower of Babel, a Star Trek Enterprise novel
- Manaan - Star Wars: Knights of the Old Republic videogame
- Mandala 2 - Sean Williams' Saturn Returns
- Mandalay - Sheri S. Tepper's Shadow's End
- Mandalore - Star Wars universe
- Mandress - Isaac Asimov's Foundation's Edge, Foundation universe
- Maness Four - James Lovegrove's World of Fire, p. 181
- Mangala - Paul McAuley's Into Everywhere, p. 140
- Mangulay - Ken Macleod's Dark Light
- Manhome - Poul Anderson's World Without Stars
- Manipool- Robert Silverberg's Thorns
- Manticore (Manticore A III) - David Weber's On Basilisk Station, Honorverse
- Mann- (orbiting Gargantua) - Christopher Nolan's movie Interstellar
- Mantilles (orbiting Pallas 14) - David R. George's Allegiance in Exile, a Star Trek: The Original Series novel, pp. 146-147
- Manussa - "Snakedance" episodes of Doctor Who
- Manza - "Mystery of the Disappearing Space Patrolman," television episode #185 of Space Patrol, September 4, 1954
- Maoli - "Heirloom," a short story by Norman Spinrad in his collection No Direction Home
- Marak's World - C.J. Cheryh's Hammerfall, Forge of Heaven
- Mardrake - Galaxina 1980 film, only 2 references
- Marduk a.k.a. Anubelea V - Poul Anderson's Firetime and "Ghetto" in William F. Nolan's short story collection A Wilderness of Stars
- Marduk - H. Beam Piper's Space Viking
- Marduk - Jay Lake's short story "The Sky that Wraps the World Bound, Past the Blue and into the Black" in Clarkesworld March 2008
- Marduk - L.E. Modesitt Jr.'s Haze
- Mare Infinitus (Ocean Planet) - Dan Simmons’s Hyperion, p. 196
- Marglot - Charles Sheffield's Resurgence
- Margbwar-12 - The Dodecadence of Margbwar-12, Chapter 25 of Steven Colbert's faux novel Alpha Squad 7: Lady Nocturne: a Tek Jansen Adventure
- Marilac - Lois McMaster Bujold's Vorkosigan Saga
- Marindra - Peter F. Hamilton's Pandora's Star, p. 149
- Marinus - “The Keys to Marinus,” Doctor Who Season 1, Story Number 5, 5-16-1964
- Mariner - C.J. Cherryh's Merchanter's Luck
- Marius - Poul Anderson's A World Named Cleopatra
- Marjoin - Iain M. Banks' Consider Phelbas
- Marklar - "Starvin' Marvin in Space," South Park, Episode 311
- Marmora II (Ribbon World) - A.E. Van Yogt and E. Mayne Hull's Planets for Sale, p. 133
- Markop III - Jack McDevitt's Polaris, p.323
- Maros Brian Herbert's The Race For God
- Marrow - Robert Reed's The Well of Stars
- Mars II - Sylvie Berard's Of Wind and Fire
- Marsupial (Gas Giant) - Ian Stewart and Jack Cohen's Heaven (SF novel), brief reference, p. 20
- Marva - The Lost Skeleton of Caderva
- Marva IV - "For the Uniform," Star Trek: Deep Space Nine Episode 13, Season 5, 2-3-1997
- Masada - Neal Asher's The Line of Polity
- Masheedd (Moon of Helvetica) - John Kessel's short story "Events Preceding the Helvetican Renaissance," in The New Space Opera 2
- Massive 49 - M. John Harrison's Empty Space: A Haunting, brief reference p. 95
- Mayernas - Katherine V. Forest's Daughters of an Emerald Dusk
- Maudette - C.J. Cherryh's Foreigner
- Maugham's Station - David Sherman & Dan Cragg's A World of Hurt
- Maui-Covenant - Dan Simmons’s Hyperion, p. 11
- Mazel Tov IV - Robert Silverberg's short story The Dybbuk of Mazel Tov IV
- Mustaine - Marguerite Reed's novel Archangel
- Mavirouleo - Iain M. Banks's The Algebraist, p. 300
- The Maw - Star Wars universe
- Max Party - M. John Harrison's Empty Space: A Haunting, brief reference p. 95
- Maximegalon - Douglas Adams' Hitchhiker's Guide To The Galaxy
- Maxroy's Purchase - Jerry Pournelle's Outies
- Mazapan - David Weber's On Basilisk Station, Honorverse
- Mazu III - Geoff Nelder's short story "Colloidal Suspension" in David Conyers et al., eds.s Extreme Planets
- McClendon - L.E. Modesitt's The Eternity Artifact, p. 26
- McGillicudy's World - Keith Laumer's The Return of Retief, Pp. 161, 165
- McPluto - Futurama, brief reference
- Meadow - Don D'Ammassa's Haven
- Meatball, a.k.a. Drambo (Ocean Planet) - James White's Major Operation, in Beginning Operations: A Sector General Omnibus
- Meath (Celtic Planet) - L.E. Modesitt's The Eternity Artifact, p. 10
- Mechanistria - Eric Frank Russell's Men, Martians and Machines
- Mechanus (Jungle Planet) - "The Chase" episodes of Doctor Who
- Mechis - Star Wars universe
- Medina - Mike Resnick's A Miracle of Rare Design
- Medusa - Jack L. Chalker's The Four Lords of the Diamond series
- Medusa - David Weber's On Basilisk Station, Honorverse
- Meekrob - Invader Zim cartoon series
- Meeloon - Eric Del Carlo's short story "Godot Isn’t Coming" Raygun Revival July 15, 2011
- Megas - Isaac Asimov's Nemesis
- Megas - Mack Reynolds' Planetary Agent X
- Meiji - Jerry Pournelle's CoDominium Future History
- Mel - Nancy Kress's Crucible
- Mela Five - Colin Kapp's Patterns of Chaos, brief reference p. 49
- Melancholia - Melancholia 2011 film
- Melcot - "Spectre of the Gun," Star Trek: The Original Series Episode 56, Season 3, 10-25-1968.
- Melbourne Colony - John Scalzi's The Android's Sheep, brief reference, p. 217
- Melde a.k.a. Ganzer - Robert Sheckley's Mindswap
- Melf IV - James White's Star Surgeon, p. 244
- Melkarth - H. Beam Piper's Space Viking, brief reference p. 55
- Melkot (alternative spelling for Melcot) (see also Theta Kiokis II)- "Spectre of the Gun," Star Trek: The Original Series Episode 56, Season 3, 10-25-1968
- Melloan - L.E. Modesitt's The Eternity Artifact, p. 67
- Melona IV - "Silicon Avatar," Star Trek: The Next Generation, Episode 4, Season 5, October 14, 1991
- Melpomenia - Isaac Asimov's Foundation and Earth
- Memnon - Don D'Ammassa's Narcissus
- Menalaus - Mack Reynolds' Planetary Agent X
- Menarian 2 - "The Empath," Star Trek: The Original Series Episode 63, Season 2, 12-6-1968
- Meniere's World - M. John Harrison's Empty Space: A Haunting, brief reference p. 95
- Merak II - "The Cloud Minders," Star Trek: The Original Series Episode 74, Season 3, 2-28-1969
- Mercan - Lee Correy's The Abode of Life (Star Trek novel)
- Mercator - John Brunner's Interstellar Empire
- Meridian - "Meridian" episode of Star Trek: Deep Space 9
- Merlin (moon orbiting Avalon) - Larry Niven, Jerry Pournelle and Steven Barnes's Beowulf's Children, p. 98
- Meroe - L.E. Modesitt's The Ethos Efect
- Merovia - John Scalzi's Redshirts
- Mesa - Richard Paul Russo's Inner Eclipse
- Merseia - Poul Anderon's Ensign Flandry, "Day of Burning"; short story in Poul Anderson's collection Beyond the Beyond
- Mesklin - Hal Clement's Mission of Gravity
- Mesyatz (moon of Dennitza) - Poul Anderson's short story A Knight of Ghosts and Shadows in the collection Sir Dominic Flandry: The Last Knight of Terra
- Meta (Gas Giant) - Scott Mackay's Phytosphere, p. 173
- Metalorn - Star Wars universe
- Metaluna – This Island Earth 1955 film
- Metaxas - Dan Simmons’ Hyperion, p. 262
- Metebelis Three - "Planet of the Spiders" episodes of Doctor Who
- Metellos - Star Wars universe
- Metz - Chris Moriarty's Spin State
- Midgard (Gas Giant) - Colin Harvey's Winter Song
- Midnight - "Midnight" episode of Doctor Who, June 14, 2008
- Midworld - Alan Dean Foster's Midworld
- Mihos (moon orbiting Ubastis) (61 Virginis system) - Marguerite Reed's novel Archangel, p. 89
- Mimban - Star Wars universe
- Miasimia Goria - Doctor Who universe
- Milanos-2 - Ellis Weiner's National Lampoon's Doon
- Miller- (orbiting Gargantua) - Christopher Nolan's Interstellar
- Minas 5 - "What are Little Girls Made Of?" Star Trek: The Original Series Episode 10, Season 1, 10-20-1966
- Minbar - Babylon 5
- Minerva James P. Hogan's sion to Minerva
- Minos - "The Arsenal of Freedom," Star Trek: The Next Generation Episode 20, Season 1, 4-11-1988 description
- Minostra - Neal Asher's Gridlinked
- Minyos - "Underworld" episodes of Doctor Who
- Minyos II - "Underworld" episodes of Doctor Who
- Moons of Mipzor - Saturday Night Live Coneheads Sketch March 18, 1978
- Mira - Elizabeth A. Lynn's A Different Light
- Mira - "The Daleks' Master Plan" episodes of Doctor Who
- Mira V a.k.a. Dytallix b (Mining Planet, Ribbon World) - "Conspiracy," Star Trek: The Next Generation Episode 24, Season 1, 5-9-1988
- Mira Ceti-T - "A Relic of the Empire," a short story in Larry Niven's Neutron Star
- Mirage - C.J. Cherryh's Foreigner
- Miranda - Firefly/Serenity universe
- Mirial - Star Wars universe
- Mirkheim - Poul Anderson's Mirkheim
- Mirzam - Scott Westerfeld's The Risen Empire, p. 75
- Mithra - Robert A. Heinlein's Tunnel in the Sky
- Mithras - "Home," a short story in Poul Anderson's New America
- Mito - Peter F. Hamilton's Pandora's Star, p. 185
- Miykennis - Iain M. Banks' Against a Dark Background
- Mizar - "Collecting Team," a short story in Robert Silverberg's Moonferns and Starsongs, brief reference
- Mnemom - Isaac Asimov's Foundation and Empire
- Moabar (Prison Planet) - Linnea Sinclear's Gabriel's Ghost
- Modhra I (Arctic Moon) - Timothy Zahn's Night Train to Rigel
- Modhra II (Arctic Moon) - Timothy Zahn's Night Train to Rigel
- Mogar (Mining PLanet) - "Terror of the Vervoids" episodes of Doctor Who
- Mok - Calvin and Hobbes' Spaceman Spiff planet
- Mokuil (mythic homeworld) - Thomas Harlan's novel House of Reeds, p. 167
- Mollan - Bob Shaw's The Ceres Solution
- Moller's World - Harry Harrison's Planet of the Damned, brief reference
- Mon Calamari a.k.a. Dac - Star Wars universe
- Mondas (Cybermen home planet) - “The Tenth Planet,” Doctor Who Season 4, Story Number 29, 10-8-1966 through 10-29-1966
- Monea - Star Trek: Voyager
- Monet - Mack Reynolds's Planetary Agent X
- Monticello IV - Mike Resnick's A Miracle of Rare Resign
- Monwaing - Poul Anderson's After Doomsday
- Moon Dedadent - Iain M. Banks' Consider Phelbas, p. 466
- Moon One - Larry Niven and Brenda Cooper's Building Harlequin's Moon
- Moon Ten - Larry Niven and Brenda Cooper's Building Harlequin's Moon
- Moon Twenty-Six - Larry Niven and Brenda Cooper's Building Harlequin's Moon
- Moon Forty-One - Larry Niven and Brenda Cooper's Building Harlequin's Moon
- Moon 44 - Moon 44, 1990 film
- Moon 46 - Moon 44 1990 film, brief reference
- Moon 47- Moon 44 1990 film, brief reference
- Moon 51 - Moon 44 1990 film, brief reference
- Mongo — Flash Gordon
- Monor II - Star Wars universe
- Moravia - Craig DiLouie's The Great Planet Robbery, p. 220
- Mordan IV - "Too Short a Lesson," Star Trek: The Next Generation Episode 15, Season 1, 2-8-1988
- Moresby - Jack McDevitt's Polaris, brief reference p. 232
- Morgansworld - Robert Holdstock's Eye Among the Blind, p. 61
- Morglay - H. Beam Piper's Space Viking
- Morningside (Shenji home planet)- Jack McDevitt's Polaris, p. 29
- Morok (home planet of the Moroks - Doctor Who universe
- Mores - Isaac Asimov's Foundation and Empire
- Moosejaw - Keith Laumer's The Return of Retief, brief reference p. 91
- Morichades - Robert Sheckley's Mindswap
- Morwedd - Sean Williams's Saturn Returns
- Moth; - Alan Dean Foster's For Love of Mother-Not
- Mother - Mack Reynolds' Planetary Agent X
- Mother Planet - Doris Lessing's The Sirian Experiments, Canopus in Argos Archives series
- Mowist - Donald Kinsbury's Psychohistorical Crisis (set in Asimov's Foundation universe)
- Moy - James Patrick Kelly's Burn, p. 18
- Moyaba (Mute planet) - Jack McDevitt's Polaris
- Mrlsst (University Planet) - Star Wars universe
- Mu Arigulon V - Michael Schuster and Steve Mollman's A Choice of Catastrophes, Star Trek: The Original Series universe
- Mu Ceta - Lois McMaster Bujold's Vorkosigan Saga
- Muir (moon) - Firefly/Serenity universe
- Mulchury (faux planet named in a novel) - Wil McCarthy's Bloom
- Muldavia 5 – “Nature v. Nurture,” Tripping the Rift, Season 1
- Mule Kick - Keith Laumer's Retief and the Warlords, brief reference, p. 173
- Mulour - "The Changeling," Star Trek: The Original Series Episode 37, Season 2, 9-29-1969
- Munar I - A.E. Van Yogt and E. Mayne Hull's Planets for Sale, brief reference
- Muninnn (moon) - Wendy N. Wagner's An Oath of Dogs
- Munto Codru - Star Wars universe
- Mur - James Gunn's Transcendental, p. 167
- Murcheson's Eye - Jerry Pournelle's Outies
- Murdstone - Ron Goulart's Clockwork Pirates, brief reference p. 18
- Muse - Unarius (UFO Religion)
- Muskree - Star Wars universe
- Mustafar - Star Wars universe
- Muunilinst - Star Wars universe
- Mycant - Richel Bach's Future's Pawn
- Mygeeto - Star Wars universe
- Mylok IV - Star Wars univere
- Mynjhiro - C.J. Ryan's Dextra
- Myomar - Star Wars universe
- Myrkr - Star Wars universe
- Mysterio 5 - Calvin and Hobbes' Spaceman Spiff planet
- Mysterio 6 - Calvin and Hobbes' Spaceman Spiff planet
- Mystus VII - Star Wars universe
- Mythisch - Matthew Hughes's Majestrum
- Mythra - Mack Reynolds's Mission to Horatius, a (Star Trek: The Original Series) novel
N[]
- N'zoth - Star Wars universe
- Naboo - Star Wars universe
- Nabu a.k.a. Anubelea I - Poul Anderson's Firetime
- Nachtel - Iain M. Banks' Against a Dark Background
- Nachtel's Ghost (terrestrial moon) - Iain M. Banks' Against a Dark Background
- Nacre - Piers Anthony's Omnivore
- Nagi - Star Wars universe
- Naha - Kristine Kathryn Rusch's Diving the Wreck
- Nal Huta - Star Wars universe
- Namatos VI - Mike Resnick's A Miracle of Rare Resign
- Nanaganda - Tobias S. Buckell's Crystal Rain
- Nansen (Arctic Planet) - John Barnes's A Million Open Doors universe
- Naqsa - Poul Anderson's Firetime
- Nar Shaddaa (moon) - Star Wars universe
- Naranja (Moon orbiting Valencia) - Guy Immega's short story "Super-Mother Earth" in David Conyers et al., eds.s collection Extreme Planets
- Narn - Babylon 5
- Nasqueron (Gas Giant in the Ulubris system) - Iain Banks's The Algebraist
- Nasya - "In the Line of Duty," Stargate SG-1, Season 2
- Nature Preserve 1 , a.k.a. NP1 - Larry Niven & Edward M. Lerner's Fleet of Worlds
- Nature Preserve 2 , a.k.a. NP2 - Larry Niven & Edward M. Lerner's Fleet of Worlds
- Nature Preserve 3 , a.k.a. NP3 - Larry Niven & Edward M. Lerner's Fleet of Worlds
- Nature Preserve 4 , a.k.a. NP4 - Larry Niven & Edward M. Lerner's Fleet of Worlds
- Nature Preserve 5 , a.k.a. NP5 - Larry Niven & Edward M. Lerner's Fleet of Worlds
- Navaros - "Delta and the Bannermen" episodes of Doctor Who
- Ne'Holland - "The Prince," - Andromeda, Second Season
- Nebari Prime - "A Clockwork Nebari," Farscape Episode 217
- Nebiru (Planet X - Babylonian Legend
- Nebel 2 a.k.a. Salt - Adam Robert's Salt
- Nechepso - Donald Kingsbury's Psychohistorical Crisis, p. 301
- Necroman 3 - Robert Holdstock's Eye Among the Blind, p. 84
- Necropolis - Douglas MCT's book Necropolis
- Neimoidia - Star Wars universe
- Nega (formerly BlueSky VI, home planet of the Negad) - John Scalzi's Fuzzy Nation,
- Nelvaan - Star Wars universe
- Neolithia - Mack Reynolds' Mission to Horatius, a Star Trek: The Original Series) novel
- Nephelos - Isaac Asimov's The Stars Like Dust, The Rebellious Stars
- Nephilim - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Neranigh - John Brunner's Interstellar Empire, p. 221
- Nergal - H. Beam Piper's Space Viking
- Neressi - Iain M. Banks's The Hydrogen Sonata, p. 218
- Nereus II (a.k.a. Arethusa ) - Clayton Ward and Kevin Dilmore's Star Trek: The Original Series universe novel Point of Divergence
- Nespis VIII - Star Wars universe
- Nestor - Donald Kingsbury's Psychohistorical Crisis
- Netu (moon) (Prison Planet) – “Jolinar’s Memories” and “The Devil You Know,” Stargate SG-1 Season 3
- Neu Pommerania - John Hickman's "When the Gods Fall" short story in Aphelion
- Neu Stuttgart (probable German Planet) - Michael Schuster and Steve Mollman's A Choice of Catastrophes, Star Trek: The Original Series universe
- Neutopia - Futurama
- The Neutral Planet (official motto: 'Live Free or Don't') - Futurama
- Neverland (a.k.a. Valhalla) - Craig DiLouie's The Great Planet Robbery
- Nevermore - Dan Simmons’ Hyperion, brief reference p. 196
- New Abderdeen (Celtic Planet) - Thomas Harlan's novel House of Reeds
- New Alderaan - Star Wars universe
- New America - Revolution television mini-series
- New Alexandria - Brian Stableford's Hooded Swan universe
- New Arizona - Mack Reynolds' Planetary Agent X
- New Beginnings - Robert A. Heinlein's Time Enough for Love
- New Beijing - Richard K. Morgan's Altered Carbon
- New Brasilia, a.k.a. New Brasilia IV - Samuel R. Delaney's Nova
- New Caledonia - Jerry Pournelle's Outies
- New California - Babylon 5
- New Cambride - C.J. Ryan's Fifth Quadrant
- New Canaan - Robert A. Heinlein's Tunnel in the Sky p. 25
- New Carthage - Richard Paul Russo's Inner Eclipse
- New Chicago - Larry Niven & Jerry Pournelle's The Mote in God's Eye and Jerry Pournelle's Outies
- New Deimos (moon), a.k.a. Tom - Robert A. Heinlein & Spider Robinson's Variable Star
- New Delos - Mack Reynolds' Planetary Agent X
- New Detriot - Robert Kroese's Starship Grifters, p. 112
- New Djawa - Poul Anderson's short story "The Plague of Masters" in the collection Sir Dominic Flandry: The Last Knight of Terra.
- New Dublin (Celtic Planet) - L.E. Modesitt's The Eternity Artifact, p. 67
- New Dresden (German Planet) – Charles Stross’s Iron Sunrise
- New Earth a.k.a. Procyon V - Brian Aldiss' Starship, p. 153
- New Earth (orbiting Alpha Centauri C) - Brian W. Aldiss's Helliconia Trilogy, Helliconia Winter, pp. 98-99
- New Earth, a.k.a. Procyon VIII, a.k.a. Labura - Robert Silverberg's Master of Life and Death, pp. 119, 198
- New Earth - James Blish's Cities in Flight universe
- New Earth a.k.a. Novaya Svoboda - Poul Anderson's "The High Ones," a short story in The Horn of Time
- New Earth - Dan Simmons’s Hyperion, p. 283
- New Earth - Lelia Rose Foreman's Shatterworld
- New Earth - "New Earth" episode of Doctor Who, April 15, 2006
- New Earth, a.k.a. Centauri Three - John Varley's short story Air Raid, in his collection In the Hall of the Martian Kings, p. 57
- New Eden – “New Adam, New Eve,” Space: 1999 Episode 10, Season 2, 10-9-1976
- New Eden - Poul Anderson's short story "The Bitter Bread," in his collection Explorations
- New Enid Desert Planet - Jack C. Haldeman II's Perry's Planet', p. 42
- New Excalbia, a.k.a. Zeta Gibraltar (planetoid) - Tony Daniel's Star Trek: The Original Series novel Savage Trade
- New Far Florence - Alastair Reynolds's Pushing Ice
- New Finland - Roger MacBride Allen's Allies & Aliens
- NewHope - Terra Nova: Strike Force Centauri video game
- New France - Craig DiLouie's The Great Planet Robbery, p. 61
- New Gargano - Matthew Hughes' short story Sleeper Light Speed November 2013
- New Germany - Peter F. Hamilton's Pandora's Star
- New Ghana - Mike Resnick's A Miracle of Rare Resign
- New Halana - Second Sight episode of Star Trek: Deep Space Nine
- New Half-Way Tree - Nalo Hopkinson's Midnight Robber
- New Hope - Nancy Kress's Crossfire
- New Hope (moon of Vegaschrist) - Roger Levy's The Rig', p. 141
- New Ireland (Celtic Planet) - Sean Williams's Saturn Returns
- New Ireland - Jerry Pournelle's Outies
- New Java - Ursula K. Le Guin's "The Word For World Is Forest," a short story in Again, Dangerous Visions, edited by Harlan Ellison, Pp. 30-108, brief reference
- New Jerusalem - Babylon 5
- New Kinaan - Kameron Hurley's God's War, Rapture, p. 31
- New Kobe - "By Any Means Necessary" episode of Babylon 5
- New Mars - Ken MacCleod's Newton's Wake: A Space Opera
- New Mars - Robert Kroese's Aye Robot: A Rex Nihilo Adventure, Pp. 4-5
- New Maxis - Craig DiLouie's The Great Planet Robbery, p. 60
- New Melbourne (Ocean Planet) - Firefly/Serenity universe
- New Midlands (a.k.a. Perkins Rent IV) - M. John Harrison's Empty Space: A Haunting
- New Muscovy - Charles Stross's Singularity Sky
- New Oregon - Carmen Carter's The Children of Hamlin, Star Trek: The Next Generation novel, p. 92
- New Parris Island - John Barnes's A Million Open Doors
- New Phobos (moon), a.k.a. Joao - Robert A. Heinlein & Spider Robinson's Variable Star
- New Pittsburgh - Robert A. Heinlein's Time Enough for Love, brief reference Pp. 285, 287
- New Plympto - Star Wars universe
- Newport a.k.a. Gehenna II - C.J. Cherryh's Merchanter's Luck
- New Prague - Charles Stross's Singularity Sky, brief reference
- New Rilchuk - Larry Niven and Edward M. Lerner's novel Destroyer of Worlds, Ringworld universe
- New Riveria - Alan Dean Foster's Flinx's Folly
- New Rome - Nancy Kress's Probability Moon, p. 43
- New Scotland (Celtic Planet) - Jerry Pournelle's Outies
- New Stockholm - Thomas Harlan's novel House of Reeds
- New Tahiti - Ursula K. Le Guin's "The Word For World Is Forest," a short story in Again, Dangerous Visions, edited by Harlan Ellison, Pp. 30-108
- New Terra - Larry Niven & Edward M. Lerner's Fleet of Worlds, p. 264, and Destroyer of Worlds, Ringworld universe
- New Terra - Faux novel Stephen Colbert's Alpha Squad 7: Lady Nocturne: A Tek Jansen Adventure referred to on The Colbert Report, Chapter 1
- New Terra - Elizabeth A. Lynn's A Different Light
- New Terrain - Elizabeth A. Lynn's A Different Light
- New Texas - H. Beam Piper & John Joseph McGuire's Lone Star Planet
- New Thallon - Peter David's Blind Man's Bluff (Star Trek: New Frontiers)
- New Tigris - Timothy Zahn's Night Train to Rigel
- New Topeka Dan Larnerd's short story "On A Crooked Planet," Raygun Revival. June 8, 2011.
- New Utah - L.E. Modesitt, Jr.'s The One-Eyed Man
- New Utah - Jerry Pournelle's Outies
- New Venusport - M. John Harrison's Empty Space: A Haunting, p. 156
- New Villefranche (orbits Bianco's Star - Robert Holdstock's Eye Among the Blind, p. 157
- New Virginia - Ken Macleod's Dark Light
- New Vixen - "Starfog," short story in Poul Anderson's collection Beyond the Beyond
- New Texas - Cartoon Animated Series Bravestarr
- Neweden - Stephen Leigh's Dance of the Hag
- Newhall - Firefly/Serenity universe
- Nexos - Isaac Asimov's The Naked Sun
- Nexus - Kristin Landon's The Hidden Worlds
- Nexus - Elizabeth A. Lynn's A Different Light
- Nguyen - Arkady Martine's A Memry Called Empire, p. 219 brief reference
- Nhar-Gk'ok - Invader Zim cartoon series
- Nhequuy (Syr system) - C.J. Cherryh's The Faded Sun series, p. 411
- Nhouaste (Gas Giant) - Iain M. Banks's The Algebraist, p. 311
- Niami - Raymond F. Jones & Lester del Rey's Weeping May Tarry, brief reference p. 169
- Nicles- Brian Herbert and Kevin J. Anderson's Hellhole universe
- Nidor (Theocratic Planet) - Robert Randall's novel The Shrouded Planet
- Nidu - John Scalzi's The Android's Dream
- Nielad - Brian Herbert and Kevin J. Anderson's Hellhole
- Niffleheim - Stephen Leigh's Dance of the Hag
- Niflhel - G. McDonald Wallis's Legend of Lost Earth
- Nigel-4 - Ellis Weiner's National Lampoon's Doon
- Nightshade - Liz Williams' Banner of Souls
- Nightshade - Richard Paul Russo's Inner Eclipse
- Nil - Meet Dave 2008 film
- Nimbus IV - Mike Resnick's short story "Catastrophe Bakers and a Canticle for Liebowitz: in The New Space Opera 2
- Nimue (moon orbiting Avalon) - Larry Niven, Jerry Pournelle and Steven Barnes's Beowulf's Children, p. 98
- Ninnelil - Jay Lake's short story "To Raise a Mutiny Betwixt Ourselves" in The New Space Opera 2
- Nippon – S.M. Stirling’s Betrayals
- Nirene - John C. Wright's Null-A Continuum
- Nirvana - A. Bertram Chandler's "Naval Engagement", a short story in the Australian Science Fiction Review. Nu. 10, June 1967.
- Nisren (mri planet) - C.J. Cherryh's The Faded Sun Trilogy, p. 14
- Nivyesta (terrestrial moon) - Michael Cobley's Humanity's Fire series
- Niyu - Alan Dean Foster's The Light Years Beneath My Feet
- Nkllon (Mining Planet) - Star Wars universe
- No-Moon - Ian Stewart and Jack Cohen's Heaven (SF novel), Pp. 20-21
- No Turning Back - James Patrick Kelly's Burn, p. 18
- Noab - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Nolevatol - F. Paul Wilson's Enemy of the State
- Nomolos - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Nordash (home world of the Nord) - Allen Steel's Hex
- Nordholm (Arctic Planet) - Dan Simmons’s Hyperion, p. 196
- Nordstral (Arctic Planet) - L.A. Graf's Star Trek: The Original Series novel Ice Trap
- Norfolk, a.k.a. Norfolk Tears - Peter F. Hamilton's Night's Dawn Trilogy
- Norge - John Brunner's Interstellar Empire
- Norn, a.k.a. Apollo 4 - Larry Niven's Destiny's Road
- Northworld - David Drake's Northworld
- Nostrilla - Cordwainer Smith's Nostrilla
- Notaxistan - Political Commentary
- Nou Occitan - John Barnes's A Million Open Doors
- Nova Brasilia - Don D'Ammassa's Haven, brief reference
- Nova Germania - Poul Anderon's Ensign Flandry
- Nova Kong - Peter F. Hamilton's Night's Dawn Trilogy
- Novaya Svodboda a.k.a. New Earth - Poul Anderson's "The High Ones," a short story in The Horn of Time
- Novia - Isaac Asimov's short story "Profession" in his collection Nine Tomorrows
- Novo Bantry - Matthew Hughes' short story Sleeper Light Speed November 2013
- Novy Kurdistan – Charles Stross’ Iron Sunrise
- Novy Srebrenicza - Charles Stross’ Iron Sunrise, p. 155
- Nubia - Star Wars universe
- Nude Beach Planet (Vacation Planet) - Futurama: Bender's Big Score
- Nulapeiron - John Meaney's Nulapeiron Sequence series
- Nueva Granada - Derek Künsken's novel Quantum Magician, p. 75
- Numitri ("the sister blossom") - Nancy Kress's Probability Moon, p. 272
- Nuova Roma - James Lovegrove's World of Fire, p. 181
- Nurag (orbits Mab, regul home planet, p.5) - C.J. Cherryh's The Faded Sun trilogy
- Nyanza - Poul Anderson's Flandry of Terra
- Nyjora - Vernor Vinge's A Fire Upon the Deep
- Nyjord (Epsilon Eridani system) - Harry Harrison's Planet of the Damned
- Nylar IV - Futurama
- Nylock - John Brunner's Interstellar Empire
- Nymphon - October 1978 issue of Penthouse
- Nyvan - Peter F. Hamilton's Night's Dawn Trilogy
O[]
- O'Dowd - M. John Harrison's Empty Space: A Haunting, p. 79
- O'Ryan's Planet - Star Trek: The Motion Picture 1979 film
- Oakka - David Brin's Infinity's Shore, Uplift universe
- Oaktier - Peter F. Hamilton's Pandora's Star, Pp. 83-84
- Oannes - “Fire and Water” episode of Stargate SG1
- Oasis - Jeffrey Thomas' Deadstock
- Oasis - Oasis Amazon television series
- Oasis - Poul Anderson's Polesotechnic League universe
- Oblivion - Doctor Who universe
- Obri (one of 7 moons of World) - Nancy Kress's Probability Moon
- Obroa-Skai - Star Wars universe
- Ocampa - Star Trek: Voyager
- Oceanus - Larry Niven & Edward M. Lerner's Fleet of Worlds, p. 157
- Odidcut - H. Beam Piper's Space Viking
- Odin - H. Beam Piper's Space Viking
- Odlum - Matthew Hughes's The Other
- Ogg - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Ogre (Gas Giant) - Poul Anderson's short story "Hunters of the Sky Cave" in the collection Sir Dominic Flandry: The Last Knight of Terra
- Ogron planet (a.k.a. Braah, home planet of the Ogrons) - "Frontier in Space" episodes of Doctor Who
- Ogros (Tau Ceti system world with acid swamps) - "The Stones of Blood" episodes of Doctor Who
- Ola Three - Lois McMaster Bujold's Vorkosigan Saga
- Olar 5 - Buzz Lightyear of Star Command 2000 film
- Old Calais - Charles Stross's Singularity Sky, brief reference
- Old Earth (Replica Planet) - Dan Simmons’s Hyperion
- Oler (ice world) - Derek Künsken's novel Quantum Magician
- Ollul - Ursula K. Le Guin's The Left Hand of Darkness, p. 35
- Olivia - Craig DiLouie's The Great Planet Robbery, p. 52
- Olympia II - Norman Spinrad's The Solarians
- Olympia III - Norman Spinrad's The Solarians
- Olympia IV - Norman Spinrad's The Solarians
- Olympia IX - Norman Spinrad's 'The Solarians
- Omagh - John Scalzi's Zoe's Tale
- Omega I - "The Omega Glory" Star Trek: The Original Series Episode 54
- Olderon - Matthew Hughes's Magestrum, p. 133, Magestrum universe
- Omicron Ceti 3 - "This Side of Paradise," Star Trek: The Original Series, Episode 25, Season 1, 3-2-1967; Michael Schuster and Steve Mollman's A Choice of Catastrophes
- Omicron Persei 8 (1000 light years from Earth) - "When Aliens Attack," Futurama Volume 1, Episode 12
- Omicron Sigma XXIVa - Richard A. Lupoff's "With the Bentfin Boomer Boys," a short story in Again, Dangerous Visions, edited by Harlan Ellison, Pp. 618-701
- Omicron Theta - Keith R.A. Decandido's Star Trek: A Time for War, A Time for Peace, p. 317
- Omivarium - David Brin's Startide Rising p. 50
- Omwart - Star Wars universe
- Onaris - Colin Kapp's Patterns of Chaos
- Onderon (orbited by the moon Dxun) - Star Wars universe
- Ondine (moon) - Matthew Hughes's Magestrum, Magestrum universe
- Ondor's Gambit - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Oovo IV - Star Wars universe
- Opheucius - Rocky Jones, Space Ranger TV series, 1954
- Ophideraan - Star Wars universe
- Ophiuchus II - Robert Sheckley's Mindswap
- Ophiuchus VI - "Mudd's Women" Star Trek Original Series Episode
- Oragen - Philip José Farmer's novel The Lovers
- Orban – “Learning Curve,” Stargate SG-1 Season 3
- Orbus - Jeanette Winterson's novel The Stone Gods
- Ord Ibanna (Gas Giant) - Star Wars universe
- Ord Mantell - Star Wars universe
- Ord Tasson - Star Wars universe
- Planet Ordon (named on a sign held by a panhandler shown in the opening sequence) - definitely, maybe 2008 film
- Orede - Murray Leinster's novel This World is Taboo fill text
- Orestes VII - John Vornholt's Masks, a Star Trek: The Next Generation novel, p. 6
- Orichades - Robert Sheckley's Mindswap
- Organia (Farm Planet) - "Errand of Mercy" Episode 27, Season 1 Star Trek Original Series March 16, 1967.
- Orgellius II - "Wolf in the Fold," Star Trek: The Original Series Episode 36, Season 2, 12-22-1967
- Orgone - Robert Holdstock's Eye Among the Blind, Pp. 84-85
- Orient IV - Lois McMaster Bujold's Vorkosigan Saga
- Orilla – “New Order, Part 2,” Stargate SG-1 Season 8
- Orinackra - Star Wars universe
- Orion - Unarius (UFO Religion)
- Orion IV (Mining Planet) - Babylon 5
- Orion 14 - "The Realm of the Robots," radio episode of Space Patrol, October 30, 1954
- Orion VII - Babylon 5
- Ork — Mork & Mindy 1978-1982 telivision series
- Orma - Poul Anderson's short story "The Plague of Masters" in the collection Sir Dominic Flandry: The Last Knight of Terra.
- Ormuzd - Robert A. Heinlein's Time Enough for Love, brief reference p. 17
- Ornara (Delos III is in the same star sytem as Brekka/Delos IV but not in the same star system as the Delos IV where Beverly Crusher interned) - "Symbiosis," Star Trek: The Next Generation Episode 21, Season 1, 4-18-1988 description
- Orotund (gas Giant) - John C. Wright's short story "The Far End of History" in The New Space Opera 2'
- Orpheus - Greg Egan's Diaspora, p. 212-224
- Orsha II - Isaac Asimov's Foundation, p. 166
- Orsini - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Orum (Jerush System) - L.E. Modesitt's The Ethos Efect
- Osa (Gas Giant) - Scott Mackay's Phytosphere, p. 173
- Osarian - Star Wars universe
- Oscar Mike One - Starship Troopers 3: Marauder 2008 film
- Oseidon (home planet of the Kraals) - "The Android Invasion" episodes of Doctor Who
- Oshu - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Osian - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Osiris (SF planet) (Vega IX) - Robert Silverberg's novel The Seed of Earth, p. 92
- Osiris (SF planet) - Firefly/Serenity universe
- Osiris (SF planet) (Procyon I) - L. Sprague de Camp's 1953 collection The Continent Makers
- Osiris 4 - "A Pharoah to Remember," Futurama Volume 3, Episode 7
- Ossining - Andy Heizeler's The Grand Illusion: A Dean The Space Rogue Tale," Raygun Revival, Issue 55, December 2009 text
- Ossus - Star Wars universe
- Ouroboros - Chris Roberson's Further: Beyond the Threshold
- Ourworld - James Gunn's Transcendental
- Outpost (orbits Nova Sol B) - Roger MacBride Allen's Rogue Power
- Ovid - Richard Paul Russo's Inner Eclipse, brief mention p. 70
- Owa – “Divine Right,” a short story by J.T. McIntosh in Nebula Science Fiction, Volume 2, Issue 7.
- Oxi - M. John Harrison's Empty Space: A Haunting, brief reference p. 95
- Oxley - M. John Harrison's Empty Space: A Haunting, brief reference p. 95
- Oxus - Chris Roberson's Further: Beyond the Threshold
- Oxygen - Savage Planet 2006 Made for Television Film
- Oza - Sean Williams's "Inevitable," a short story in The New Space Opera 2
- Ozzieworld - Peter F. Hamilton's Pandora's Star, p. 75
P[]
- P2A-347 – “Lifeboat,” Stargate SG-1 Season 7
- P2X-005 – “Forsaken,” Stargate SG-1 Season 6
- P2X-005 - “Space Race,” Stargate SG-1 Season 7
- P2X-338 - “The Tomb,” Stargate SG-1 Season 5
- P2X-374 – “Redemption, Part 1,” Stargate SG-1 Season 6
- P2X-885 – “Fourth Horseman, Part 1,” Stargate SG-1 Season 9
- P3C-249 – “Avenger 2.0,” Stargate SG-1 Season 7
- P3X-289 – “Revisions,” Stargate SG-1 Season 7
- P3X-403 – “Enemy Mine,” Stargate SG-1 Season 7
- P34-353J - “The Tokra, Part 1” and “The Tokra, Part 2,” Stargate SG-1 Season 2
- P3R-233 - “There But For the Grace of God,” Stargate SG-1 Season 1
- P3R-636 - “Need,” Stargate SG-1 Season 2
- P3X-439 – “Lost City, Part 1” and “Lost City, Part 2,” Stargate SG-1 Season 7
- P3X-451 - “A Matter of Time,” Stargate SG-1 Season 2
- P3X-562 - "Cold Lazarus," Stargate SG-1 Season 1
- P3X-584 – “Prototype,” Stargate SG-1 Season 9
- P3X-666 – “Heroes, Part 1” and “Heroes, Part 2,” Stargate SG-1 Season 7
- P3X-744 – “Memento,” Stargate SG-1 Season 6
- P3X-797 - "The Broca Divide," Stargate SG-1 Season 1
- P3X-888 - “The First Ones,” Stargate SG-1 Season 4
- P3X-955 – “Birthright,” Stargate SG-1 Season 7
- P4S-141 – “Endgame,” Stargate SG-1 Season 8
- P4S-237 – “Prophecy,” Stargate SG-1 Season 6
- P4X-639 - “Window of Opportunity,” Stargate SG-1 Season 4
- P5S-117 – “Avenger 2.0,” Stargate SG-1 Season 7
- P5X-112 – “The Other Guys,” Stargate SG-1 Season 6
- P6J-908 – “Zero 8,” Stargate SG-1 Season 8
- P7J-989 - “The Gamekeeper,” Stargate SG-1 Season 2; “Avatar,” Stargate SG-1 Season 8
- P8F-809 – “Zero Hour,” Stargate SG-1 Season 8
- P8X-412 – “The Powers That Be,” Stargate SG-1 Season 9
- P9Y-4C3 – “Meridian,” Stargate SG-1 Season 5; “Shadow Play,” Stargate SG-1 Season 6
- PBX-987 - “Singularity,” Stargate SG-1 Season 1
- PBX-989 - “Tin Man,” Stargate SG-1 Season 1
- PBX-1279 a.k.a. Chartago - “Cor-Ai,” Stargate SG-1 Season 1
- PJ6-877 - “Dead Man’s Switch,” Stargate SG-1 Season 3
- PX3-989 a.k.a. Juna - “Double Jeopardy,” Stargate SG-1 Season 4
- PX8-987 – “The Rite of Passage,” Stargate SG-1 Season 5
- PXY-887 - “Spirits,” Stargate SG-1 Season 2
- Pacem (home of the New Vatican) - Dan Simmons’s Hyperion
- Pachur Port - Marguerite Reed's novel Archangel
- Pacifica (Ocean Planet) - "Conspiracy," Star Trek: The Next Generation Episode 24, Season 1, 5-9-1988 description
- Pacifica - Norman Spinrad’s A World Between
- Pacifica - David R. George's Allegiance in Exile, a Star Trek: The Original Series novel, p.163
- Pagonna - Elizabeth Raines's Sold (Wicked Missions 4)
- Pahnshu - John Scalzi's Old Man's War, p. 271
- Pakhome (Pak homeworld) - Larry Niven and Edward M. Lerner's novel Destroyer of Worlds, Ringworld universe
- Paklatuthl - David Brin's Startide Rising p. 139, Uplift universe
- Palanhi - Star Wars universe
- Palatine - M.R. Meluch's The Ninth Circle
- Paldron - Robert A. Heinlein's Starman Jones
- Pallas - Isaac Asimov's collection Robots of Dawn
- Palmermo - Mack Reynolds' Planetary Agent X
- Paloana - Maya Kathyrn Bohnhoff's short story "Simple Gifts" Analog January/February 2010, brief reference
- Palvin Arctic Planet - Jack C. Haldeman II's Perry's Planet', p. 34
- Pan C.J. Cherryh's Merchanter's Luck
- Panamax - M. John Harrison's Empty Space: A Haunting, p. 71
- Pandora (moon) - Avatar 2009 film
- Pandora - Sarah Zettel's Kingdom of Cages
- Pangar - “Cure” and “The Changeling,” Stargate SG-1 Season 6
- Panna - Dan Simmons’s Hyperion, p. 340
- Panoran VII - Robert Mancebo's short story "The Chosen One," Raygun Revival, Issue 43, May 2008
- Pantolomin - Star Wars universe
- Paquin (planet or moon) - Firefly/Serenity universe
- Par - Nancy Kress's Crucible
- Paraiso-Aqui - Harry Harrison's The Stainless Steel Rat for President
- Paradise - Joanna Russ's Picnic on Paradise
- Paradise, a.k.a. Pharos, - Brian Stableford's The Paradise Game, Hooded Swan universe
- Paradox - Richel Bach's Future's Pawn
- Paramay - Isaac Asimov's Foundation and Empire, Foundation universe
- Parchmont' (Desert Planet) - Don D'Ammassa's Haven, brief reference
- Parliament (Conference Planet) - Star Trek: The Next Generation Episode 6, Season 1, 11-2-1987
- Parsimony - Dan Simmons’ Hyperion, p. 210
- Parth - Firefly/Serenity universe
- Partussy - Brian W. Aldiss' Bow Down to Nul
- Parvati - Dan Simmons’ Hyperion, p. 212
- Pasadena - Arthur C. Clarke's The Songs of Distant Earth
- Passen (smallest moon of Jijo) - David Brin's Infinity's Shore
- Passy - John Barnes's A Million Open Doors
- Pastoral - Don D'Ammassa's Haven, brief reference
- Patel - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Patience - Elizabeth Bear's Undertow, Pp. 84, 186
- Peace (moon of Addams) - John Barnes's A Million Open Doors universe
- Pearl (Barnards's Star 2 C) a.k.a. Barney Deucy - Charles E. Gannon's novel Fire With Fire
- Pearl (Proxima c) - Stephen Baxter's novel Proxima
- Peekaboo Two (Immega 714 2) a.k.a. Bravo, a.k.a. Brazil Novo - Robert A. Heinlein & Spider Robinson's Variable Star
- Peladon - "The Curse of Peladon" and "The Monster of Peladon" episodes of Doctor Who
- Pelian Zel - "The Host," Star Trek: The Next Generation Episode 23, Season 4, 5-13-1991
- Pelican - Peter F. Hamilton's Pandora's Star, p. 33
- Pell a.k.a. Pell's World (orbits Pell's Star - C.J. Cherryh's Downbelow Station and C.J. Cherryh's Merchanter's Luck
- Pellagra (Bejoran colony) - David R. George III's Star Trek: The Original Series novel Allegiance in Exile, p. 314
- Pellin - Elizabeth A. Lynn's A Different Light
- Pelorum - Firefly/Serenity universe
- Penalipan - John Brunner's Interstellar Empire, p. 221
- Peneli - Majliss Larson's Pawns and Symbols, a Star Trek: The Original Series novel, brief reference
- Pengo - Rudy Rucker's Hylozoic
- Pepinia - Babylon 5 universe
- Pepple - Rudy Rucker's Hylozoic, p. 114
- Per Adua (Proxima e) - Stephen Baxter's novel Proxima
- Peragus II - Star Wars universe
- Perdur Alas - Sheri S. Tepper's Shadow's End
- Peregrine (terraformed asteroid) – Dan Simmons’ Hyperion, p. 135
- Perfuffin - Rob Reid's novel Year Zero, p. 160
- Perkin's Rent - M. John Harrison's Empty Space: A Haunting, p. 9
- Pern - Anne McCaffrey's Dragonriders of Pern universe
- Perry - Jack C. Haldeman II's Perry's Planet
- Persephone - Firefly/Serenity universe
- Pestolozzi a.k.a. Dapdrof - Brian Addiss's The Dark Light Years
- Petaybee - Anne Mccaffrey & Elizabeth Ann Scarborough's Changelings
- Pete's World - "Rise of the Cybermen" and "Doomsday" episodes of Doctor Who
- Peterburg - M. John Harrison's Empty Space: A Haunting, p. 9
- Petrichor-5 - Arkady Martine's A Memry Called Empire, p. 219 brief reference
- Petrino - John C. Wright's Null-A Continuum, p. 52
- Phaester Osiris (home planet of the Osirians - "Pyramids of Mars" episodes of Doctor Who
- Pharos a.k.a. Paradise - Brian Stableford's The Paradise Game, Hooded Swan universe
- Phastillan - L. Warren Douglas's A Plague of Change
- Phigerinadon II - Harry Harrison's Bill, the Galactic Hero
- Philos - John Scalzi's The Android's Dream
- Phlenbahn - John Scalzi's The Android's Dream, brief reference p. 56
- Phoenix (Planet) - David Weber's On Basilisk Station, Honorverse
- Phoenix (Planet) (a.k.a. Beta Phyxis III - John Scalzi's Old Man's War, Zoe's TaleThe Android's Dream, p. 217
- Phoeniz (Planet) - M.R. Meluch's The Ninth Circle
- Phrastesis - Iain M. Banks' Against a Dark Background
- Pik Station - Gareth L. Powell's short story "Six Lights off Green Star."
- Pila - David Brin's Uplift universe
- Pirri – “Guardian of Pirri,” Space: 1999 Episode 2, Season 1, 11-13-1975
- Piranha - Keith Laumer's The Glory Game
- The Pit (a.k.a. Ullamon) - Matthew Hughes's The Other, p. 97
- Pitcairn Island - Robert A. Heinlein's Time Enough for Love, Pp. 392-394
- Pittance (rogue dwarf planet) - Iain M. Banks's Excession, Pp. 158-159
- Pixlet - M. John Harrison's Empty Space: A Haunting, brief reference, p. 195
- Planet 2 - Doris Lessing's The Sirian Experiments, Canopus in Argos Archives series
- Planet 4 (892 System) - "Bread and Circuses," Star Trek: The Original Series Episode 43, Season 2, 3-15-1968
- Planet 8 - Doris Lessing's The Sirian Experiments, Canopus in Argos Archives series
- Planet 9 - Doris Lessing's The Sirian Experiments, Canopus in Argos Archives series
- Planet 13 (Swamp Planet) - Doris Lessing's The Sirian Experiments, Canopus in Argos Archives series
- Planet 16 of the Tau Ceti System - Barbarella film
- Planet 51 - Planet 51 2009 film
- Planet Beta 45 - Beach Babes from Beyond 1993 film
- Planet Bird - Space Sheriff Gavan: The Movie 2-12 film
- Planet Blue - Jeanette Winterson's novel The Stone Gods
- Planet Butt - Anal Intruder 9: The Butt From Another Planet 1995 film
- Planet D – “Brian the Brain,” Space: 1999 Episode 9, Season 2, 10-2-1976
- Planet Gutt - "More is More," episode of 321 Penguins
- Planet Jacker Homeworld - Invader Zim cartoon series
- Planet P - Robert A. Heinlein's Starship Troopers p. 221
- Planet Turbulence - David Brin's novel Existence, p. 639
- Planet V - Ursulla K. LeGuin's "Nine Lives," a short stroy in World's Best Science Fiction 1970, ed. Donald A. Wallheim & Terry Carr
- Planet Vinci - "The Duh-Vinci Code," episode of Futurama July 15, 2010
- Planet X - Poul Anderson's short story "Hunters of the Sky Cave" in the collection Sir Dominic Flandry: The Last Knight of Terra, brief reference
- Planet X - Edward Ashpole's non-fiction book Signatures of Life: Science Searches the Universe, p. 192
- Planet X - Isaac Asimov's short story "The Deep," in his collection The Martian Way
- Planet X - Paul Davies' nonfiction The Eerie Silence
- Planet X (Desert Planet) - Buzz Lightyear of Star Command television cartoon series
- Planet XXX (Nude Beach Planet) - In-A-Gadda-Da-Leela episode of Futurama June 24, 2010
- Planet X - Leather Goddesses of Phobos 2 video game
- Planet X - Cowboys vs. Aliens 2011 film
- Planet X (a.k.a. Nebiru) - Babylonian Legend
- Planet Xi (a.k.a. 82 Eridani III) - R.M. Meluch's Strength and Honor, p. 92
- Planet Z - Buzz Lightyear of Star Command
- Planet Z - Robert Kroese's novella Aye Robot: A Rex Nihilo Adventure
- Planet of Orphans and Widows - Buzz Lightyear of Star Command
- Plastreodus 14 - [[Doctor Who] universe
- Porcelo - Buzz Lightyear of Star Command
- Polyphemus (Gas Giant) - Craig DiLouie's The Great Planet Robbery
- Planos (moon) - "The Planos Epidemic," television episode #9 of Space Patrol, February 24, 1951
- Planet Porno - Flesh Gordon 1974 X-rated film
- Planet of Broken Glass - Invader Zim cartoon series
- Planet of the Everlasting - Raelianism
- Planet of the Seven Suns - Arthur C. Clarke's 1953, 1956 The City and the Stars
- Planter's Delight - Jack McDevitt's Polaris
- Planetoid 60 - "The Treasure of Planetoid 60," radio episode of Space Patrol, June 27, 1953
- Plateau (SF planet) - Larry Niven's Protector brief reference, and "The Ethics of Madness," a short story in Larry Niven's Neutron Star
- Plesk - Iain M. Banks' Against a Dark Background
- Plookesia - Invader Zim cartoon series
- Plootarg - Calvin and Hobbes' Spaceman Spiff planet
- Plowman's Planet - Philip K. Dick's Galactic Pot-Healer
- Pluk - Kin-Dza-Dza 1986 film (Russian)
- Plymouth - A History Channel Thanksgiving 15th Season, 13th Episode of South Park November 9, 2011.
- Pock's World - Dave Duncan's Pock's World
- Poictesme - H. Beam Piper's The Cosmic Computer, a.k.a. Junkyard Planet
- Pol - Lois McMaster Bujold's Vorkosigan Saga
- Polarfrey (Gas Giant) - Doctor Who universe
- Pollux 4 (Beta Geminorum System) - "Who Mourns for Adonais," Star Trek: The Original Series Episode 33, Season 2, 9-22-1967
- Polymos (home planet of the Auton|Nestene Conciousness) - Doctor Who universe
- Polyphemus (SF planet) - (a single mooned Gas Giant) - Ken Macleod's Newton's Wake: A Space Opera, p. 29
- Pompey - Poul Anderson's A World Named Cleopatra
- Ponca II - Jack C. Haldeman II's Perry's Planet', p. 42
- Poowadya - John Brunner's Interstellar Empire, p. 221
- Poopiter In-A-Gadda-Da-Leela episode of Futurama June 24, 2010
- Porpula - faux fictional planet in Tracy Morgan's "Astronaut Jones Episode 16" skit on Saturday Night Live
- Port Ferry - M. John Harrison's Empty Space: A Haunting, p. 9
- Praclush Toanas - “Lost City, Part 2,” Stargate SG-1 Season 7
- Pradesh - Don D'Ammassa's Narcissus
- Praesitlyn - Star Wars universe
- Praximf - Phyllis Gotlieb's Mindworlds, p. 92
- Praxis (moon) - Keith R.A. Decandido's Star Trek: A Time for War, A Time for Peace
- Prenstaleraf - Iain M. Banks' Against a Dark Background
- Preservation - Martha Wells's novel Network Effect
- Prestno (a.k.a. World 88) - Ursula K. Le Guin's "The Word For World Is Forest," a short story in Again, Dangerous Visions, edited by Harlan Ellison, Pp. 30-108
- Pretoria - "Sucker Bait," a short story in Isaac Asimov's The Martian Way and Other Stories brief reference
- Pria - Star Wars universe
- Priam - Colin Kapp's Patterns of Chaos, brief reference p. 49
- Prima - Poul Anderson's "Iron," a novella in Larry Niven's Man-Kzin Wars, Pp. 93-94
- Primus Three - Lin Cawthra's Primus Three
- Prince Samual's World - Jerry Pournelle's King David's Spaceship and Outies.
- Pring - David Brin's Uplift universe
- Priplanus - "Islands in the Sky" episode of Lost in Space television series
- Prism - Alan Dean Foster's Sentenced to Prism
- Proamon - "Dragonfire" episode of Doctor Who
- Procyon IV - "The Atomic Vault," television episode #210 of Space Patrol, February 26, 1955.
- Procyon 5 (faux fictional planet) - James Morrow's Shambling Toward Hiroshima
- Procyon V a.k.a. New Earth - Brian Aldiss's Starship, p. 153
- Procyon V - Poul Anderson's "Ghetto" in William F. Nolan's short story collection A Wilderness of Stars
- Procyon VI - “Always,” Nebula Science Fiction Volume 2, Issue 16
- Procyon VIII a.k.a. New Earth, a.k.a. Labura - Robert Silverberg's Master of Life and Death, pp. 119, 198
- Prodenda IX - Robert Sheckley's Mindswap
- Procyon IX, a.k.a. Dirna - Robert Silverberg's Master of Life and Death, pp. 121, 142
- Prodas - Michael Cobley's Humanity's Fire series
- Prokaryon - Joan Slonczewski's The Children Star - An Elysium Cycle Novel
- Proxima III (Proxima Centauri system) - Babylon 5
- Proxima Centaurus - William Tenn's "The Liberation of Earth," a short story in Robert Silverberg's collection Invaders from SWpace
- Prute (moon is Big Rock) - Keith Laumer's The Return of Retief
- Psi - "The Naked Time," Star Trek: The Original Series Episode 7
- Psi Serpentis IV (a.k.a. Sauria) - Christopher L. Bennett's novel Tower of Babel, a Star Trek Enterprise novel
- PSR B1257+12c (in Virgo) - Ken Macleod's Newton's Wake: A Space Opera, p. 166
- Psychlo - L. Ron Hubbard's Battledfield Earth
- Psychon – “The Metamorph,” Space 1999 Episode 1, Season 2, 9-4-1976
- Ptolemy - Derek Künsken's novel Quantum Magician, p. 141
- Pulitzer - (faux fictional planet) Stephen Colbert's Alpha Squad 7: Lady Nocturne: A Tek Jansen Adventure, a faux fictional novel referred to on The Colbert Report, Episode 81, April 19, 2006.
- Pussyworld - "Suitors, Inc." episode of Dr. Who
- Puys - Matthew Hughes's Magestrum, Magestrum universe
- Pyrassis (Desert Planet) - Alan Dean Foster's Reunion
- Pyrus 7 - "Catspaw," Star Trek: The Original Series Episode 30, Season 2, 10-27-1967
- Pyrylyn - Brian Aldiss's Starswarm, p. 18; Brian Aldiss's Who Can Replace a Man?, p. 170
- Pzob (K749 System) (Jungle Planet) - Star Wars universe
Q[]
- Q-13 - Calvin and Hobbes' Spaceman Spiff planet
- Qamara - Jack McDevitt's Polaris, p. 228
- Qelso - Brian Herbert & Kevin Anderson's Sandworms of Dune
- Qi'Vol - David Mack's Star Trek: The Next Generation novel A Time to Kill
- Qiorfu - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Qo'noS - Keith R.A. Decandido's Star Trek: A Time for War, A Time for Peace
- Qolme - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Qom-Riyadh (Shi’a planet) - Dan Simmons’s Hyperion, Pp. 136-137
- Qotem - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Qua'runze (one of four Gas Giants in the Ulubris system) - Iain Banks's The Algebraist, p. 104
- Qualor II - "Unification, Part 1," - Star Trek: The Next Generation Episode 7, Season 5, 11-4-1991
- Quarta (Gas Giant) - Poul Anderson's "Iron," a novella in Larry Niven's Man-Kzin Wars, PP. 74-77
- Quendar IV - Robert Silverberg's "To A Dark Star," in Joseph Elder's short story collection The Farthest Reaches
- Quidde (high gravity but terrestrial planet) - John Barnes's A Million Open Doors universe
- Quin - Sigilverse comic book universe
- Quinnius - "The Edge of Destruction" episodes of Doctor Who
- Quinta (Gas Giant) - Poul Anderson's "Iron," a novella in Larry Niven's Man-Kzin Wars, PP. 76-77
- Quinta (Quinta Zeta Harpiae) - Stanislaw Lem's short story collection Fiasco
- Quofum - Alan Dean Foster's Quofum
- Quopp - Keith Laumer's Retief's War
- Quorg - Calvin and Hobbes' Spaceman Spiff planet
- Quoristan - Isaac Asimov's Second Foundation
R[]
- Raaga (Prison Planet) - "The Visitation" episodes of Doctor Who
- The Radiator Planet - Futurama universe
- Radole (Ribbon World) - Isaac Asimov's Foundation and Empire, p. 127
- Rafa - Star Wars universe
- Rafe - Iain M. Banks' Against a Dark Background
- Ragesh III - Babylon 5
- Ragnarok - Colin Harvey's Winter Song
- Ragnarok - Tom Godwin's Space Prison (a.k.a. The Survivors) and The Space Barbarians
- Rakhat - Mary Doria Russell's Children of God, Sparrow
- Rakosa Five - "Dreadnaught," Star Trek: Voyager Episode 34, Season 2, 2-12-1996
- Ral (One of seven moons of World]) - Nancy Kress's Probability Moon
- Ralltiir - Star Wars universe
- Rekag – “Man of the People,” Star Trek: The Next Generation, Episode 3, Season 6, 10-5-1992
- Rakis a.k.a. Arrakis - Frank Herbert's Heretics of Dune, Dune universe
- Raksh (one of two moons of Rustum) - "My Own, My Native Land," a short story in Poul Anderson's New America
- Ramachandra's World (a.k.a. Alpha Centauri B II; a.k.a. Haven; a.k.a.) - Chris Roberson's Further: Beyond the Threshold
- Ramanujan - Poul Anderson's short story "The Warriors From Nowhere," in the collection Sir Dominick Flandry: The Last Knight of Terra
- Ràn - Paul McAuley's novel Into Everywhere, p. 99
- Randa - Star Wars universe (featured in the Second Kessel Run comic)
- Randtwo - L.E. Modesitt, Jr.'s The One-Eyed Man, brief reference
- Ranus - Brian Herbert's The Race For God
- Ratoon - Robert A. Heinlein's Tunnel in the Sky
- Ratshole - Samuel R. Delany's novel 'Empire Star
- Rattatak - Star Wars universe
- Raven (47 Ursae Majoris 2) - Allen Steele's Coyote Rising
- Raxicoricofallapatorius (twin planet of Clom) - Doctor Who universe
- Ravolox - "The Mysterious Planet" episodes of Doctor Who
- Raxus Prime - Star Wars, videogame "Star Wars: The Clone Wars"
- Raxacoricofallapatorius - Doctor Who universe
- Recopia (Recopi System) - Star Wars universe
- Redeye - Keith Laumer's Retief and the Warlords, brief reference, p. 180
- Ree'hdworld (orbits Sigma G53) - Robert Holdstock's Eye Among the Blind
- Reed 1935-C - Eleanor Arnason's Ring of Swords
- Reesethree (Gas Giant) - C.L. Anderson's Bitter Angels
- Reetalia - “Show and Tell,” Stargate SG-1 Season 2
- Refusis II (a.k.a. Refusis, an (Exile Planet) – “The Ark,” Doctor Who Season 3, Story Number 23
- Regina (Mining Planet) (moon) - Firefly/Serenity universe
- Reginta - J. Jack Bergeron's GREETINGS EARTHLINGS, My name is Appleton and I come from the Planet Reginta
- Regis III - Stanislaw Lem's Invincible
- Regula IV - Babylon 5 universe
- Regulus - Jack McDevitt's Polaris, brief reference p. 229
- Regulus IV - Robert Silberberg and Randall Garrett's short story "Deus Ex Machina" in their collection A Little Intelligence
- Regulus 5 - "Amok Time," Star Trek: The Original Series Episode 34, Season 2, 9-15-67, brief reference
- Relay - Vernor Vinge's A Fire Upon the Deep
- Relva VII - "Coming of Age," Star Trek: The Next Generation Episode 18, Season 1, 3-14-1988 description
- Remulak - Coneheads 1993 film adapted from SNL sketches
- Renaissance Minor - Dan Simmons’s Hyperion, p. 28
- Renaissance V a.k.a. Renaissance Vector - Dan Simmons’s Hyperion, Pp. 196, 256
- Renaissance Vector a.k.a. Renaissance V - Dan Simmons’s Hyperion, Pp. 196, 256
- Renatasia - Star Wars universe
- Resurgam (orbits Delta Pavonis) - Alastair Reynolds' Redemption Ark
- Retha - "The Full Circle," Space: 1999 Episode 15, Season 1, 12-11-1975
- Rezerval - Margaret Ball's Disappearing Act
- Rhaandaran - Star Trek: The Motion Picture 1979 film
- Rhampora - Isaac Asimov's Foundation and Earth
- Rhapsody - Brian Stableford's Rhapsody in Black
- Rhea - Cargo 2009 film
- Rhen Var - Star Wars universe
- Rheton - The Phantom Planet 1961 film
- Rhinnal - Star Wars universe
- Rhizome (Professor Triffid's home world) - Buzz Lightyear of Star Command
- Ribos - "The Ribos Operation" episodes of Doctor Who
- Rho Ceta - Lois McMaster Bujold's Vorkosigan Saga
- Rho Coronae Borealis d. (a "heavy Mars") - Ken Macleod's Newton's Wake: A Space Opera
- Rhodia - Isaac Asimov's The Rebellious Stars
- Rhommomool - Star Wars universe
- Rhy (moon) - Samuel R. Delany's novel 'Empire Star
- Ria (home planet of the Riayet) - Kristine Kathryn Rusch's Paloma
- Ribos - "The Ribos Operation," Doctor Who 1975
- Riddle - Mike Moscoe's The Price of Peace
- Ridgetop - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Riff - Robert A. Heinlein's Citizen of the Galaxy
- Riflor - Star Wars universe
- Rigel 4 (home of Kang and Kodos) - The Simpsons animated television series
- Rigel 4 - "Wolf in the Fold," Star Trek: The Original Series Episode 36, Season 2, 12-22-1967; "Half a Life," Star Trek: The Next Generation Episode 22, Season 4, 5-6-1991
- Rigel V - "Inter Arma Enim Silent Leges," Star Trek: Deep Space Nine
- Rigel 7 (either a planet or a solar system) - "The Doomsday Machine," Star Trek: The Original Series Episode 35, Season 2, 10-20-1967; "Menagerie (Part Two)" Star Trek: The Original Series Episode 16, Season 1, 11-17-1966, flashback reference
- Rigel-Rigel - Evan Mandery's First Contact: Or, Its Later Than You Think. p. 54
- Rigel Seven - "A Man if Talent," a short story in Robert Silverberg's collection Moonferns and Starsongs
- Rigel VIII - Keith R.A. Decandido's Star Trek: A Time for War, A Time for Peace, p. 78
- Rigel 12 - "Mudd's Women," in Star Trek: The Original Series Episode 41, Season 2, 10-13-1966.
- Rigel 13 - "Lazy Daze," episode of 321 Penguins
- Rigel XIX - Robert Silverberg's "The Pleasure of Your Company," a short story in Robert Hoskin's collection Infinity One
- Rigna II Robert Sheckley's novel Minotaur Maze, p. 16
- Riker's Planet - Jack Vances's short story Sjambak full text
- Rikha - Poul Anderson's For Love or Glory
- Riks - L.E. Modesitt's The Ethos Efect
- Rimmon - H. Beam Piper's Space Viking, p. 133
- Rimway - Jack McDevitt's Polaris
- Ring - "Memory," a short story in Poul Anderson's collection Beyond the Beyond
- Rinthi - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Ripley's Pleasure Planet - "The Man Trap," Star Trek: The Original Series Episode 6, Season 1, 9-8-1966
- Risa - Keith R.A. Decandido's Star Trek: A Time for War, A Time for Peace
- Rishi - Star Wars universe
- Reverie – Bruce Sterling's The Artificial Kid
- Roanoke - John Scalzi's The Last Colony
- Roaval - Iain M. Banks' Against a Dark Background
- Robinson D (a.k.a. Triton) - James Lovegrove's World of Fire
- Rocastle - Una McCormack's Star of the Sea, p. 70, (Weird Space universe)
- Rochard's World - Charles Stross's Singularity Sky
- Rodeo - Lois McMaster Bujold's Vorkosigan Saga
- Rodia - Star Wars universe
- Roget - Colin Kapp's The Wizard of Anharitte
- Rokanan - Ursula K. Le Guin's The Left Hand of Darkness, brief reference p. 59
- Roman Holiday - Anderson Gentry's A Sky of Diamonds
- Romanujan - Poul Anderson's Mirkheim
- Romulus - Keith R.A. Decandido's Star Trek: A Time for War, A Time for Peace
- Ronam - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Roosevelt - John Barnes's A Million Open Doors universe
- Ronom - Brian Herbert and Kevin J. Anderson's Hellhole
- Ronruad - "Day of Burning," short story in Poul Anderson's collection Beyond the Beyond
- Roshanak (Moon of Helvetica) - John Kessel's short story "Events Preceding the Helvetican Renaissance," in The New Space Opera 2
- Rossem (sub-Arctic Planet) - Isaac Asimov's Second Foundation, pp. 34-49, 64-70
- Roswell - Buzz Lightyear of Star Command animated television series
- Rothana - Star Wars universe
- Roxlatl - Poul Anderson's Polesotechnic League universe
- Rubanis - The Circles of Power comic book series
- Russalka - Jonathan L. Howard's novel Katya's World
- Rustum - "My Own, My Native Land," a short story in Poul Anderson's collection New America
- Ruta 3 (Arctic Planet) - "Horror of Fang Rock" episodes of Doctor Who
- Ruusan - Star Wars universe
- Ryloth (Ribbon World) - Star Wars
- Ryvriss XIII - Brian Aldiss's Starswarm, p. 128
- Ryyk - Star Wars universe
S[]
- S - Ursula K. Le Guin's The Left Hand of Darkness, brief reference p. 59
- SC-28E - Dan Larnerd's short story "On A Crooked Planet," Raygun Revival. June 8, 2011.
- S-Dem - Kristine Kathryn Rusch's Paloma
- S'sgarnon - Star Trek: The Original Series
- St. Rita - James Blish's Earthman Come Home, p. 280, Cities in Flight universe
- Saarn - Star Wars universe
- Sabbath - Robert Holdstock's Eye Among the Blind
- Sacorria - Star Wars universe
- Sacrecour, (terrestrial moon orbiting the Gas Giant Gobulus) - Jack McDevitt's Polaris, Pp. 265-266
- Sadachbia - Ian Stewart and Jack Cohen's Heaven, p. 209
- Saddlesore - Keith Laumer's Retief and the Warlords, brief reference, p. 173
- Safehold - David Weber's Off Armageddon Reef
- Sagan II - Arthur C. Clarke's The Songs of Distant Earth
- Sagittarius Zero' - R.M. Meluch's Strength and Honor
- Saheelindeel - Star Wars universe
- Salaam 61 Virginis system) - Marguerite Reed's novel Archangel, p. 91
- Salem - L.E. Modesiit Jr.'s The Elysium Commission, p. 125
- Salem - L.E. Modesitt, Jr.'s The One-Eyed Man
- Saleucami - Star Wars universe
- Salina - Isaac Asimov's Foundation and Empire, Foundation universe
- Salinus - Samuel R. Delaney's Nova, brief reference
- Salisbury (planet or moon) - Firefly/Serenity universe
- Salliche, (Farm Planet) - Star Wars universe
- Sally's Cupboard - Nancy Kress's Probability Moon, p. 37
- Salm - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Salostophus - "The Mysterious Planet" episodes of Doctor Who
- Salt, a.k.a. Nebel 2, - Adam Robert's Salt
- Salud Afar - Jack McDevitt's The Devil's Eye
- Salusa Secundus - Brian Herbert and Kevin J. Anderson's Dune: The Battle of Corrin Dune universe
- Samarkand - Neal Asher's Gridlinked
- San Helios - Doctor Who universe
- San-Ska-Re - Andromeda television series
- San-Tarah - Keith R.A. Decandido's Star Trek: A Time for War, A Time for Peace, p. 232
- Sandalion - one of two moons of Hermes - Poul Anderson's Mirkheim
- Sandora Prime - Tony Daniel's Star Trek: The Original Series novel Savage Trade, brief reference
- Sandurst (Islyn System) - L.E. Modesitt's The Ethos Effect
- Sandusky - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Sangre, (Cannibal Planet) - Norman Spinrad's The Men in the Jungle
- Sanitek (X'xx-x) - Michael Rubens' The Sheriff of Yrnameer
- Sanja (home world of the Soranta) - Allen Steele's Hex
- Sanjin - Star Wars universe
- Santa Maria (moon orbiting Lagrima) - Richard Paul Russo's The Rosetta Codex
- Santa Muerte - M. John Harrison's Empty Space: A Haunting, brief reference, p. 195
- Santandru - Kristin Landon's The Hidden Worlds
- Santanni - Isaac Asimov's Foundation universe
- Santee Anchorage - Adam Rakunas's Windswept
- Sanctuary - Robert A. Heinlein's Starship Troopers
- Santhenar a.k.a. Santh - Ian Irvine's The Three Worlds Cycle
- Santo - Firefly/Serenity universe
- Sappire - Star Wars universe
- Sarawiee - Star Wars universe
- Sardonik Five - Robert Kroese's short story "The Yanthus Prime Job"
- Sarip - Isaac Asimov's Forward the Foundation
- Sargol - Andre Norton's Plague Ship
- Sargon - Robert A. Heinlein's Citizen of the Galaxy
- Sargas 4 - "Majority Rule" episode of The Orville television series
- Sark - Isaac Asimov's The Currents of Space
- Sarka - Star Wars universe
- Sarn (volcanic Desert Planet) and Prison Planet) - "Planet of Fire" episodes of Doctor Who
- Sarona VIII - "We'll Always Have Paris," Star Trek: The Next Generation Episode 23, Season 1, 5-2-1988
- Sarpedon - "All Our Yesterdays," Star Trek: The Original Series Episode 78, Season 3, 3-14-1969
- Sassania - Poul Anderson's short story "The Warriors From Nowhere," in the collection Sir Dominick Flandry: The Last Knight of Terra
- Saturus - Brian Herbert's The Race For God
- Sauria (Psi Serpentis IV) - Christopher L. Bennett's novel Tower of Babel, a Star Trek Enterprise novel
- Sayshell - Isaac Asimov's Foundation's Edge, Foundation universe
- Satan's World (rogue Arctic Planet) - Poul Anderson's Satan's World
- Saudade - M. John Harrison's Nova Swing
- Saybrook's Planet - Isaac Asimov's "Misbegotten Missionary," a short story in Robert A. Heinlein's collection Tomorrow the Stars
- Scalos - "Wink of an Eye," Star Trek: The Original Series Episode 68, Season 2, 11-29-1968
- Schars's World (a Planet of the Dead) - Iain M. Bank's Consider Phlebas
- Schlorp - [https://www.imdb.com/title/tt8910922/ Solar Opposites animated television series
- Schufnaasik Six - Robert Kroese's Starship Grifters'
- Scotha - Poul Anderson's Polesotechnic League universe
- Secundus - Robert A. Heinlein's Time Enough for Love
- Sectilia - Jennifer Foehner Wells's Fluency
- Sedesia - Star Wars universe
- Sedri - Star Wars universe
- Seefra-1 (orbits Methus II) - "The Weight, Part 1" Gene Roddenberry's Andromeda, Season 1, Episode 1
- Seefra-2 (orbits Methus II) - "Moonlight Becomes You" Gene Roddenberry's Andromeda, Season 1, Episode 13
- Seefra-5 (orbits Methus II)- "What Will Be Was Not" Gene Roddenberry's Andromeda, Season 1, Episode 9, "Through a Glass, Darkly" Gene Roddenberry's Andromeda, Season 1, Episode 10
- Seefra-7 (orbits Methus II) - "Phear Phactor Phenom" Gene Roddenberry's Andromeda, Season 1, Episode 3
- Seefra-8 (orbits Methus II) - "So Burn the Untamed Lands" Gene Roddenberry's Andromeda, Season 1, Episode 8
- Seefra-9 (orbits Methus II) - "Quantum Tractate Delirium" Gene Roddenberry's Andromeda, Season 1, Episode 18
- Segonax - "The Greatest Show in the Galaxy" episodes of Doctor Who
- Segur - C.J. Cherryh's The Faded Sun Trilogy, brief reference, p. 64
- Sel (one of 7 moons of World) - Nancy Kress's Probability Moon
- Selab - Star Wars universe
- Selaggis - Star Wars universe
- Selantro - Robert Kroese's Starship Grifters
- Selay (Beta Renna star system) - "Lonely Among Us," Star Trek: The Next Generation Episode 6, Season 1, 11-2-1987 description
- Selbelle III - Zach Hughes's Closed System, brief reference p. 66
- Selene - Larry Niven and Brenda Cooper's Building Harlequin's Moon
- Selonia - Star Wars universe
- Seni Major (Terrestrial Moon) - Rachel Bach's Fortune's Pawn, p. 240
- Senisran (Ocean Planet) - Alan Dean Foster's The Howling Stones
- Sense Sphere (home planet of the Sensorites) - "The Sensorites" episodes of Doctor Who
- Sentnar - Lora Leigh's Menage a Magick
- Sepekte (Ulubris system) - Iain Banks's The Algebraist
- Septima (Gas Giant) - Stanislaw Lem's short story collection Fiasco
- Sequoia - Neal Barrett Jr.'s Highwood
- Sera - Gears of War video game
- Seremathenn - Alan Dean Foster's The Light Years Beneath My Feet
- Serendipity - Jack McDevitt's Polaris, p. 323
- Serenno - Star Wars universe
- Sergyar - Lois McMaster Bujold's Vorkosigan Saga
- Serieve - "Starfog," short story in Poul Anderson's Beyond the Beyond
- Sermeria - Star Wars universe
- Sernpidal - Star Wars universe
- Seshat - H. Beam Piper's Space Viking
- Set - H. Beam Piper's Space Viking, brief reference p. 55
- Setor - Star Wars universe
- Sevalis - Richel Bach's Future's Pawn
- Setsai - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Shada - Prison Planet - Shada episodes of Doctor Who
- Shadow - Firefly/Serenity universe
- Shaggai (sister planet to Xiclotl) - Cthulhu Mythos
- Shakuras - Starcraft video game
- Shalina - James L. Cambias's novel A Darkling Sea
- Shamash a.k.a. Anubelea IV - Poul Anderson's Firetime
- Shame, sister planet of Home - Scott Westerfeld's The Risen Empire
- Shammat (Prison Planet) - Doris Lessing's The Sirian Experiments, Canopus in Argos Archives series, Pp. 52-54
- Shamo (a.k.a.Epsilon Indi A) - Charles E. Gannon's Fire With Fire, p. 255
- Shangra-la - Mack Reynolds' Planetary Agent X
- Shard's World - Una McCormack's Star of the Sea, p. 66, (Weird Space universe)
- Sharya (Islamist theocracy) - Richard M. Morgan's Altered Carbon, p. 158
- Sheashel Haven - Ursula K. Le Guin's The Left Hand of Darkness, p. 35
- Sheathclaws - Larry Niven's Ringworld's Children
- Shemzee - Matthew Hughes's Magestrum, Magestrum universe
- Shen IV - Phyllis Gotlieb's Mindworlds
- Sheol - Robert A. Heinlein's Starship Troopers p. 133
- Sheridan's Planet - "Druglegger's Run," a short story by Kurt Heinrich Hyatt, Aphelion 148, 14, December 2010
- Sherman's Planet - The Trouble with Tribbles Star Trek: The Original Series, Episode 42, Season 2, 12-29-67
- Shesha - H. Beam Piper's Little Fuzzy, brief reference
- Shikasta - Doris Lessing's Shikasta (cosmic consciousness)
- Shili - Star Wars universe
- Shimanjin - Thomas Harlan's novel House of Reeds
- Shinnkaria - Don DeBrandt's novel Viral Intelligence
- Shiva III - Robert A. Heinlein's Citizen of the Galaxy
- Shiva-Parvati - Alastair Reynold's Revelation Space universe
- Shuft - Matthew Hughes's Magestrum, Magestrum universe
- Sick World (Special Purpose Planet) - Andy Remic's Hardcore
- Sidero - Jay Lake's short story "To Raise a Mutiny Betwixt Ourselves" in The New Space Opera 2
- Silicon New Turk - M. John Harrison's Empty Space: A Haunting, p. 9
- Silver's Home - Brenda Cooper's Reading the Wind
- Sirius 6B - Screamers 1995 film
- Shoa - C.J. Cherryh's The Faded Sun Trilogy, brief reference, p. 64
- Shora (Terrestrial Moon and Ocean Planet) - Joan Slonczewski's A Door into Ocean
- Sicily 8 (Gangster Planet) - Futurama
- Sierra - Jane Lindskold's Artemis Awakening
- Sigma 957 - "Mind War," Babylon 5, March 2, 1994
- Sigma 1014 Orionis a.k.a. Inshai - Diane Duane's Spock's World (Star Trek Novel), pp. 38-39
- Sigma Ceta - Lois McMaster Bujold's Vorkosigan Saga
- Sigma Draconis 2 - "Spock's Brain," Star Trek: The Original Series Episode 61, Season 3, 9-20-1968
- Sigma Draconis 4 - "Spock's Brain," Star Trek: The Original Series Episode 61, Season 3, 9-20-1968
- Sigma Draconis 6 (a.k.a. Sigma Draconis 7 in a mistake by Capt. Kirk) - "Spock's Brain," Star Trek: The Original Series Episode 61, Season 3, 9-20-1968
- Sigma Draconis 7 (a.k.a. Sigma Draconis 6 in a mistake by Capt. Kirk) - "Spock's Brain," Star Trek: The Original Series Episode 61, Season 3, 9-20-1968
- Sigma Hominis Volantis - Poul Anderson's Virgin Planet
- Sigma Iotia II - "A Piece of the Action," in Star Trek: The Original Series Episode 49, Season 2, 1-12-1968
- Earth Colony Signia Minor - "The Conscience of a King," Star Trek: The Original Series Episode 13, Season 1, 12-8-1966
- Signik - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Sihnon - Firefly/Serenity universe
- Silesia - David Weber's On Basilisk Station, Honorverse
- Silvergalde - Peter F. Hamilton's Pandora's Star, p. 149
- Silverhold (planet or moon) - Firefly/Serenity universe
- Silvium - L.E. Modesitt's The Ethos Effect, p. 347
- Simarka - "Emancipation," Stargate: SG1, Season 1
- Sinzar - Babylon 5 universe
- Siren (Mining Planet) - Craig DiLouie's The Great Planet Robbery
- Sirius Three - "Collecting Team," a short story in Robert Silverberg's collection Moonferns and Starsongs, brief reference
- Sirius Four - "Three Exiles," television episode #100 & "The Shakedown," television episoide #101 of Space Patrol, November 22, 1952 and November 29, 1952
- Sirgamesk - Jack Vances's short story Sjambak full text
- Sirus Minor - Invader Zim cartoon series
- Sisk - Star Wars universe
- Sisshain - F.M. Busby's The Proud Enemy
- Siwenna - Isaac Asimov's Foundation, pp. 165-166
- Sjandra Kei - Vernor Vinge's A Fire Upon the Deep
- Skadi - Paul McAuley's Into Everywhere
- Skako - Star Wars universe
- Skaro (Dalek home planet) - Doctor Who universe
- Skaro - Steven Pinker's nonfiction The Stuff of Thought, p. 288
- Skathi - H. Beam Piper's Space Viking, p. 162
- Skonos - "The Horns of Nimon" episodes of Doctor Who
- Skor II - Star Wars universe
- Sky's Edge - Alastair Reynolds's Chasm City
- Skyron - "Science Fiction Sketch" in "You're No Fun Anymore" in Monty Python's Flying Circus television series, The First Series, Number Seven, 11-30-1969
- Sladden - Iain M. Banks' Consider Phelbas, p. 63
- Slowyear (Arctic Planet - Frederick Pohl's Stopping at Slowyear
- Sluis Van (Sluis Sector) - Star Wars universe
- Smarteel - Star Wars universe
- Smitheus - Isaac Asimov's colelction Robots of Dawn
- Smar - John Scalzi's The God Engines
- Smoo - Mark Crilley's Akiko and the Planet Smoo
- Smyrno - Isaac Asimov's Foundation universe
- Snake (5th Moon of Bear) - Allen Steele's Coyote Rising
- Socorro - Star Wars, West End Games's Star Wars: The Role-Playing Game adventure, "The Black Sands of Socorro"
- Söderblom - John Barnes's A Million Open Doors universe
- Soghrune - C.J. Cherryh's The Faded Sun Trilogy, brief reference, p. 64
- Sohrab (one of two moons of Rustum) - "My Own, My Native Land," a short story in Poul Anderson's New America
- Sol Draconi Septem - Dan Simmons’s Hyperion, brief reference p. 256
- Solace - Roger MacBride Allen's The Ocean of Years
- Solais V - "The Adversary," Star Trek: Deep Space Nine, 6-19-95.
- Solaria - Isaac Asimov's The Naked Sun
- Solaris - Stanislaw Lem's Solaris, Film, film Remake
- Soleast - Star Wars universe
- Solos - "The Mutants" episodes of Doctor Who
- Sonjeera - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Sontar (a.k.a. Sontara) (homeworld of the Sontarans) - "The Time Warrior" episodes of Doctor Who
- Sontara (a.k.a. Sontar) (homeworld of the Sontarans) - "The Time Warrior" episodes of Doctor Who
- Sorbonne Prime - Robert Kroese's Starship Grifters, p. 120
- Sorpen - Iain M. Banks' Consider Phlebas
- Soror – Pierre Boule's Planet of the Apes
- Soros - Margaret Ball's Disappearing Act
- Sorrow - Wil McCarthy's Lost in Translation
- South Pole Planet - "Birthday Month" episode of Axe Cop, first season
- Space Earth - Futurama universe
- Space Rome - Futurama universe
- Spatterjay - Neal Asher's The Skinner & The Voyage of the Sable Keech
- Spectra - UFO Report from the British Ministry of Defence BBC News Report
- Spengo - Mom and Dad Save the Universe 1992 film
- Speyr (terraformed world) - Iain M. Banks's Against a Dark Background
- Sphereon One - "War is the H-Word," Futurama Volume 2, Episode 17
- Sphinx (Manticore A IV) - David Weber's On Basilisk Station, Honorverse
- Spica IV]] - Robert A. Heinlein's Tunnel in the Sky
- Spica VI - Poul Anderson's short story "The Plague of Masters" in the collection Sir Dominic Flandry: The Last Knight of Terra.
- Spindrift - Roger Levy's The Rig', p. 140
- Spiridon (home planet of the Spiridons) - "Planet of the Daleks" episodes of Doctor Who
- Splendid Wisdom - Donald Kinsbury's Psychohistorical Crisis (set in Asimov's Foundation universe)
- Springapatam - Matthew Hughes's The Spiral Labyrinthe, Majestrum trilogy
- Squeal - James Gunn's Transgalactic, Transcendental' universe.
- St. Albans - Firefly/Serenity universe
- Stakoron II - "The Nagus," Star Trek: Deep Space Nine, 3-21-93
- Starfall - Richard K. Morgan's Altered Carbon
- Stark - Isaac Asimov's The Currents of Space
- Starkad - Poul Anderson's Ensign Flandry
- Starjj - Brian W. Aldiss's Bow Down to Nul
- Stella Maris (Desert Planet) - Una McCormack's Weird Space Universe
- Steffani - Isaac Asimov's Second Foundation, Foundation universe
- Stellar III - Raymond F. Jones & Lester del Rey's Weeping May Tarry
- Stittara - L.E. Modesitt, Jr.'s The One-Eyed Man
- Stombos 4 - Futurama
- Storage Planet - Invader Zim cartoon series
- Strleb (orbiting Omega Sagitta) - “The Outrageous Okona,” Star Trek: The Next Generation Episode 4, Season 2, 12-12-1988
- Straumli Realm - Vernor Vinge's A Fire Upon the Deep
- Stratford-on-Avon IV - Mike Resnick's short story "Catastrophe Bakers and a Canticle for Liebowitz: in The New Space Opera 2
- Stygia - Brian W. Aldiss' HARM (compare to Gazzali)
- Styris IV - "Code of Honor," Star Trek: The Next Generation Episode 3, Season 1, 10-12-1987
- Subterrel (underground colony) - Star Wars universe
- Sulla - Poul Anderson's A World Named Cleopatra
- Sullust - Star Wars universe
- Sulyn - L.E. Modesitt's The Ethos Efect
- Sunday - Mark Michialowski's Wetworld, Doctor Who universe
- Sundown - Norman Spinrad's The Men in the Jungle, brief reference, p. 24
- Superon - Ronald N. Bracewell's nonfiction The Galactic Club
- Surim - “A Matter of Balance,” Space: 1999 Episode 16, Season 2, 12-9-1976
- Svartheim - Thomas Harlan's novel House of Reeds, p. 55
- Svartos - "Dragonfire" episodes of Doctor Who
- Svivren - Star Wars universe
- Svoboda – Dan Simmons’s Hyperion, p. 77
- Swamp Moon of Akdar (Desert Planet) - Robert Kroese's Starship Grifters'
- Swift - Greg Egan's Diaspora, Pp. 259-272
- Sy Myrth - Star Wars universe
- Sya - James Swallow's The Latter Fire' (Star Trek: TOS novel)
- Syhaar Prime (Terrestrial planet - James Swallow's The Latter Fire' (Star Trek: TOS novel)
- Sykar - "Thank God It's Friday. Again," Farscape Episode 10106
- Sylvania - C.J. Ryan's 'Glorious Treason
- Sylvanna VIII - Norman Spinrad's 'The Solarians
- Syndon IV - Robert A. Heinlein's Citizen of the Galaxy
- Synnax - Isaac Asimov's Foundation universe
T[]
- TP 105 (moon of Roaval) - Iain M. Banks' Against a Dark Background
- T'Nane - Tricia Sullivan's Dreaming in Smoke
- Ta (Mining Planet)- “The Space Pirates,” Doctor Who Season 6, Story Number 49, (6 episodes) 3-8-1969 to 4-12-1969
- Taa - The Galactus Trilogy comic book
- Taa II - The Galactus Trilogy comic book
- Taanab - Star Wars universe
- Taklamakan - The Silk Road, a short story in The Infinite Matrix, June 26, 2002
- Tal-Lith - Ann Maxwell's A Dead God Dancing
- Talax - Star Trek: The Next Generation universe
- Talay - Star Wars universe
- Tallon IV - Metroid Prime video game
- Talorus - Ultima Underworld II: Labyrinth of Worlds video role playing game
- Talos 4 (one of 11 planets in the Talos system) - "Menagerie (Part One)" and "Menagerie (Part Two)" Star Trek: The Original Series Episode 16, Season 1, 11-17-1966
- Talos - C.J. Cherryh's The Faded Sun Trilogy
- Talravin - Star Wars universe
- Talus (Corellian System) - Star Wars universe
- Tamar (61 Virginis system) - Marguerite Reed's novel Archangel, p. 89
- Tammuz - Poul Anderson's Firetime
- Tamerlaine - Mike Resnick's A Miracle of Rare Resign
- Tampico - Peter F. Hamilton's Pandora's Star, p. 255
- Tananius-Ofo Brian Herbert's The Race For God
- Tandy One - Brian Aldiss's Starswarm, p. 127
- Tandy Two - Brian Aldiss's Starswarm, p. 127
- Tangea - Buzz Lightyear of Star Command animated television series
- Tangaroa - Robert A. Heinlein's Tunnel in the Sky
- Tanis - Pandorum 2009 film
- Tanith - David Brin's Uplift universe
- Tanith - H. Beam Piper's Space Viking
- Tanuga IV - Star Trek: The Next Generation
- Taoola - "Mortos Der Soulstealer" episode of Invader Zim cartoon series
- Tantalus V (Prison Planet) - "Dagger of the Mind," Star Trek: The Original Series Episode 11, Season 1, 11-3-1966
- Tara - L.E. Modesitt's The Ethos Efect
- Tara - "The Androids of Tara" episodes of Doctor Who
- Tarantulon VI - "Three Hundred Big Boys," episode of Futurama, June 15, 2003
- Taratwo - Zach Hughes's Closed System
- Tarawana - "Landscapes," a short story in Kevin J. Anderson's collection Landscapes, brief reference
- Tarazed - Andromeda television series
- Tarbos - Anderson Gentry's The Crider Chronicles
- Taris - Star Wars universe, Videogame "Star Wars: Knights of the Old Republic"
- Tarn Vedra - Andromeda television series
- Tarok (moon) - Star Trek universe
- Tarsalas - Scott Mackay's Phytosphere
- Tarsus IV - "The Conscience of a King," Star Trek: The Original Series Episode 13, Season 1, 12-8-1966
- Tarvek 12 - "The Planet of the Living Clouds," a short story by Norman Hess, Aphelion, Issue 30, 1999
- Tas (one of 7 moons of World and unknown to the aborigines an artifact or artificial moon) - Nancy Kress's Probability Moon
- Tashita - Don D'Ammassa's Narcissus
- Tasir Var - Karen Traviss' Wess'har Wars universe
- Taspir III - Star Wars Videogame "Star Wars: Jedi Knight: Jedi Academy"
- Tatooine - Star Wars universe
- Tattoo - Craig DiLouie's The Great Planet Robbery
- Tatyata - Peter F. Hamilton's Pandora's Star
- Tau Ceti III - "Conspiracy," Star Trek: The Next Generation Episode 24, Season 1, 5-9-1988
- Tau Ceti 3, a.k.a. Avalon - Larry Niven's Destiny's Road
- Tau Ceti IV - George Zebrowski's Macrolife: A Mobile Utopia
- Tau Ceti IV - Colin Harvey's Winter Song
- Tau Ceti IV - Poul Anderson's The Long Way Home, p. 200
- Tau Ceti Center (a.k.a. TC squared) - Dan Simmons’s Hyperion
- Tau Tramula - Babylon 5 universe
- Tau Verde IV - Lois McMaster Bujold's Vorkosigan Saga
- Taurin - Michael P. Kube-McDowell's Exile
- Taurus II - 'The Galileo Seven, episode 14 of Star Trek: The Original Series, 1-5-67.
- Tay - Ian McDonald's "The Tear," a short story in Gardner Dozois' collection Galactic Empires
- Tazenda - Isaac Asimov's Foundation and Second Foundation
- Tejaphey - Ian McDonald's "The Tear," a short story in Gardner Dozois' collection Galactic Empires
- Telecore - R.M. Meluch's Strength and Honor
- Tellantrum - John Brunner's Interstellar Empire, p. 221
- Tellus - Gawanin Edwards/Edward Pendray's 1929 novel The Earth-Tube, p. 1.
- Telos – “The Tomb of the Cybermen,” Doctor Who Season 5, Story Number 37, (4 episodes) 9-2-1967 to 9-23-1967
- Telos - Star Wars Videogame "Star Wars: Knights of the Old Republic II: The Sith Lords"
- Telos - "The Tomb of the Cybermen" episodes of Doctor Who
- Telthi - Star Wars universe
- Temperance (Mining Planet - John Scalzi's Old Man's War, p. 164
- Tendara Colony - Peter David's Blind Man's Bluff (Star Trek: New Frontiers)
- Tenebra - Hal Clement's Close to Critical
- Tenerife - Don D. Ammassa's Narcissus, p. 216
- Tenusia Brian Herbert's The Race For God
- Teppera - L.E. Modestt, Jr.'s The One-Eyed Man
- Terra - Space Patrol universe
- Terra 11 - Spacehunter: Adventures in the Forbidden Zone 1983 film
- Terra 219 - Battle Planet 2008 film
- Terra Alpha - "The Happiness Patrol" episodes of Doctor Who
- Terra Nova – “Matter of Life and Death,” Space: 1999 Episode 2, Season 1, 11-27-1975
- Terra Rica - M.R. Meluch's The Ninth Circle
- Terra - Version of Earth where the Roman epmire never fell, Stephen Baxter's Ultima
- Terradon - "Full Circle" episodes of Doctor Who
- Terranova - Jack McDevitt's Polaris, p. 323
- Terrina (Goal 97 Four) (terraformed planet) - Walter Jon Wlliams' Aristoi
- Territa (Little Earth) - Robert A. Heinlein's Tunnel in the Sky
- Terminal - James Gunn's novel Transcendental universe
- Terminus - Isaac Asimov's The Foundation Trilogy
- Tersurus - "The Deadly Assassin" and "The Curse of Fatal Death" episodes of Doctor Who
- Tertia (Arctic Planet) - Poul Anderson's "Iron," a novella in Larry Niven's Man-Kzin Wars, Pp. 96-98
- Tertius - Robert A. Heinlein's The Cat Who Walks Through Walls and Time Enough for Love
- Tetragrammaton - H. Beam Piper's Space Viking, p. 133
- Tetrapyriarbus (home planet of the Tetraps) - "Time and the Rani," a four part Doctor Who episode broadcast September 7-September 28, 1987
- Texcoco (orbiting Rigel) - Mack Reynold's The Rival Rigellians
- Tezwa - Keith R.A. Decandido's Star Trek: A Time for War, A Time for Peace; David Mack's A Time to Kill
- Thaf Beta IV - Robert A. Heinlein's Citizen of the Galaxy
- Thalassa - Arthur C. Clarke's The Songs of Distant Earth
- Theros - Captain Video cinema serial, Columbia.
- Tragona VII - A.E. Van Yogt and E. Mayne Hull's Planets for Sale, brief reference
- Thaleia - R.M. Meluch's The Sagitarius Command and Strength and Honor
- Throra - Poul Anderson's Polesotechnic League universe
- Tranchion IV - A.E. Van Yogt and E. Mayne Hull's Planets for Sale, brief reference
- Thargon - "Rescue Party," a short story in Arthur C. Clarke's Reach for Tomorrow, brief mention
- The Discoveries - M. John Harrison's Empty Space: A Haunting, brief reference, p. 195
- The Fourth Part - M. John Harrison's Empty Space: A Haunting, brief reference, p. 195
- The Thousand Dreams of Stellavista - M. John Harrison's Empty Space: A Haunting, brief reference, p. 195
- Thesalina - “Dorzak,” Space: 1999 Episode 21, Season 2, 8-25-1977
- Thesus 5 - "Charlie X," Star Trek: The Original Series Episode 8, Season 1, 9-15-1966
- Theta 12 - Marguerite Reed's novel Archangel, p. 31
- Theta 49 – Babylon 5 universe
- Theta Cygni 12 - "Operation Annihilate!" Star Trek: The Original Series Episode 29, Season 1, 4-13-1967
- Theta Kiokis II (alternative names Melcot and Melkot - "Spectre of the Gun," Star Trek: The Original Series Episode 56, Season 3, 10-25-1968
- Third Fury (moon of the Gas Giant Nasqueron) - Iain Banks's The Algebraist, p. 68
- Thiopa - Howard Weinstein's Power Hungry (Star Trek: The Next Generation novel)
- Third World of the Antarres System - e-Waste Delivery episode of Futurama, July 1, 2010
- Thisspias - Star Wars universe
- Thistlewaite - Michael F. Flynn's short story "On Rockety Thistlewaite" Analog January/February 2010
- Thor (SF planet) - Poul Anderson's The Long Way Home
- Thor (SF planet) - H. Beam Piper's Little Fuzzy, brief reference
- Thor (SF planet) (Epsilon Eridani) - L. Sprague de Camp's The Continent Makers
- Thor V - James Blish's Cities in Flight universe
- Thorburg - John Barnes's A Million Open Doors
- Thoros Alpha - "Mindwarp" episodes of Doctor Who
- Thoros Beta (home planet of the Mentors - "Vengeance on Varos" episodes of Doctor Who
- Thoth (Procyon III) - L. Sprague de Camp's The Continent Makers
- Thoth IV - Robert A. Heinlein's Citizen of the Galaxy
- Thra - The Dark Crystal
- Thrais - Matthew Highes's Template
- Thrax - Richard Paul Russo's The Rosetta Codex, p. 265
- Thraxas - Tabula Rasa video game
- Three Hills (planet or moon) - Firefly/Serenity universe
- Thrintun - Larry Niven's World of Ptavvs
- Throne (a.k.a. Caelum) - F. Paul Wilson's Enemy of the State
- Thrymheim - John C. Wright's novel Count to a Trillion, p. 130
- Thuban 9 - That Darn Katz episode of Futurama
- Thugon - Cthulhu Mythos
- Thule - Robert A. Heinlein's Tunnel in the Sky p. 33
- Thule - "Star Wars: The Clone Wars," Star Wars universe video game
- Thunderhouse - Poul Anderson's Virgin Planet
- Thyferra (Polith System) - Star Wars "Rogue Squadron" video game
- Thyoph - Cthulhu Mythos
- Tibrin - Star Wars universe
- Tiercel - T.J. Bass's Half Past Human
- Tiermann's World - Paul Magrs's Sick Building, Doctor Who universe
- Tierra - Ian MacDonald's River of Gods
- Tigella - "Meglos" episodes of Doctor Who
- Tilara (Tilari home world) - E.M. Busby's The Proud Enemy
- Timdo - Donald Kinsbury's Psychohistorical Crisis, set in Asimov's Foundation universe, p. 214
- Tines' World - Vernor Vinge's A Fire Upon the Deep
- Tintamarre - Matthew Hughes's The Other
- Tir - "On the Rock," a short story in Colin Harvey's collection Displacement
- Tireate (terrestrial world) - "On the Rock," a short story in Colin Harvey's collection Displacement
- Tirten - "On the Rock," a short story in Colin Harvey's collection Displacement
- Tirwan - "On the Rock," a short story in Colin Harvey's collection Displacement
- Tirahnn (Tirahnn System) - Star Wars universe
- Tithonus - "The Creature from the Pit" episodes of Doctor Who
- Tl'ho (Gas Giant) - Larry Niven and Edward M. Lerner's novel Destroyer of Worlds, Ringworld universe
- Tlaoli - L.A. Graf's Future Imperfect: Janus Gate Book Two a Star Trek: The Original Series novel
- Tloona - David Brin's Uplift universe
- Tnp - James McKimmey's "The Inspector," a short story in Joseph Elder's collection The Farthest Reaches
- Tock - Matthew Hughes's The Other, brief reference
- Tolive - F. Paul Wilson's Enemy of the State
- Tollana - “Enigma,” Stargate SG-1 Season 1, “Shades of Grey,” Stargate SG-1 Season 3
- Tolnep (home world of the Tolneps) - L. Ron Hubbard's Battlefield Earth
- Tom (moon), a.k.a. New Deimos - Robert A. Heinlein & Spider Robinson's Variable Star
- Tombstone - Jack C. Haldeman II's Perry's Planet', brief reference p. 8
- Tomogren - Michael Schuster and Steve Mollman's novel A Choice of Catastrophes, Star Trek: The Original Series universe
- Toog - Mark Crilley's Akiko and the Journey to Toog
- Toola - Star Wars uniberse
- Toop (home planet of the Quevvils and Mantodeans - Doctor Who novel Winner Takes All
- Tophet - Roughnecks: Starship Troopers Chronicles 1999 Animated Television Series
- Toprawa - Star Wars universe
- Toranira - Lois McMaster Bujold's Vorkosigan Saga
- Torch - David Weber's Torch of Freedom, Honorverseuniverse
- Torgen (middle size moon of Jijo) - David Brin's Infinity's Shore, Uplift universe
- Toris - Sylvia Louise Engdahl's 'The Far Side of Evil
- Tormance - Ivan Yefremov's 1968 novel The Bull's Hour (Час Быка)
- Toussaint - Margaret Ball's Disappearing Act, p. 183: Toussaint - Nalo Hopkinson's Midnight Robber
- Toxicon - Jack McDevitt's Polaris
- Toydaria - Star Wars universe
- Trade World - Buzz Lightyear of Star Command animated television series
- Trajeen - Neal Asher's Prador Moon: a Book of the Polity
- Traken (Metulla Orionsis system) (Pacifist Planet) - "The Keeper of Traken" and "Logopolis" episodes of Doctor Who
- Tralfamadore - Kurt Vonnegut, Jr.'s SlaughterHouse Five (1969)
- Traltha (Tralthan home planet) - James White's Hospital Station, p. 190
- Tralus (Corellian System) - Star Wars universe
- Tran - Jerry Pournelle's Janissaries
- Trandosha - Star Wars universe
- Tranquela - Doctor Who universe, missing episodes
- Tranquille (orbits star KM 849) - Robert A. Heinlein's Time Enough for Love
- Trantor - Isaac Asimov's The Foundation Trilogy
- Trantor Beta - "A Walk in the Dark," a short story in Arthur C. Clarke's Reach for Tomorrow, brief mention
- Treetrunk, a.k.a. Argus V - Alan Dean Foster's Dirge
- Tregatour - M. John Harrison's Empty Space: A Haunting, brief reference, p. 195
- Trencher - John Clute's Appleseed
- Trewsworld - Andre Norton's Plague Ship, brief mention
- Triacus - "And the Children Shall Lead," Star Trek: The Original Series Episode 60, Season 3, 10-11-1968
- Trill - Star Trek universe
- Trion - "Planet of Fire" episodes of Doctor Who
- Triskele - Richard Paul Russo's Inner Eclipse
- Triskelion - "The Gamesters of Triskelion," Star Trek: The Original Series Episode 46, Season 2, 1-5-1968.
- Trisol (located in the Forbidden Zone, in the Galaxy of Terror) - "My Three Suns," Futurama Volume 1, Episode 7
- Triton (a.k.a. Robinson D) - James Lovegrove's World of Fire
- Triton 4 (Mining Planet) - Screamers 1995 film
- Triumph (moon) - Firefly/Serenity universe
- Triumvirate - Richard Paul Russo's Inner Eclipse
- Trivsdal - Timothy Zahn's The Third Linx
- Troas - Isaac Asimnov's short story "Sucker Bait"
- Troas - Poul Andersom's short story "Question and Answer"
- Trontephori - Iain M. Banks' Against a Dark Background
- Troyius - "Elaan of Troyius," Star Trek: The Original Series Episode 57, Season 3, 12-20-1968
- Trullion (Ocean Planet) - Jack Vance’s Trullion: Alastor 2262
- Tschai – Jack Vance’s City of the Chasch; Servants of the Wankh; The Dirdir; The Pnume
- Tsingtao-Hsishuang - Dan Simmons’s Hyperion
- Tulamaine IV or Tulamane IV (orbiting the star Trixel) - Alien Trespass 2009 film
- Tubman B12 - Samuel R. Delaney's Nova
- Tukaloose - Evan Mandery's First Contact: Or, Its Later Than You Think. p. 17
- Tunkaree - Matthew Hughes's The Spiral Labyrinthe, p. 35, Majestrum trilogy
- Tupile - Dune universe
- Turku - Charles Stross's Singularity Sky, brief reference
- Tutmose II - Don D'Ammassa's Narcissus
- Tuuqalia - Alan Dean Foster's The Light Year's Beneath My Feet
- Tvibura - Greg Egan's Phoresis
- Tviburi - Greg Egan's Phoresis
- Tweenis 12 - Futurama universe
- Twenty-First Earth (Eta Carina XCIX) - John C. Wright's short story "The Far End of History" in The New Space Opera 2'
- Tymbrim - David Brin's Uplift universe
- Tynga - Michael Cobley's Humanity's Fire series, Seeds of Earth, p. 567
- Tyranaël a.k.a. Virginia - Elizabeth Vonarburg's A Game of Perfection
- Tyrann - Isaac Asimov's The Stars Like Dust
- Tyranna - "Prisoners of Tyranna" & "Invasion from Tyranna," radio episodes of Space Patrol, September 18, 1954 & September 25, 1954
- Tyre (Gas Giant) - Samuel R. Delany's novel Empire Star
- Tyron - Unarius (UFO Religion)
- Tythonus - Doctor Who universe
U[]
- U.V.6. - The Chronicles of Riddick 2004 Film
- Ubastis - Marguerite Reed's novel Archangel
- Ueter - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Udaspri (ringed planet, probable Gas Giant) - John Scalzi's Old Man's War, brief reference p. 186
- Uerkle (moon of Nasqueron) - Iain M. Banks's The Algebraist, p. 307
- Uiqid - Zheng Wenguang's short story: "The Mirror Image of Earth"
- Ukko (Gas Giant) - James L. Cambias's novel A Darkling Sea
- Ullamon (a.k.a. The Pit) - Matthew Hughes's The Other
- Uller - Judith Merril's novella Daughters of Earth
- Ulster (Celtic Planet) - L.E. Modesitt's The Eternity Artifact, p. 10
- Ultima Thule – “Death’s other Dominion,” Space: 1999 Episode 14, Season 1, 10-2-1975
- Ultima Thule - Robert A. Heinlein's Citizen of the Galaxy
- Ultron – My Hero BBC Television Series
- Ulysses - John C. Wright's short story "The Far End of History" in The New Space Opera 2'
- Umayma - Kameron Hurley's God's War
- Umbara - Star Wars universe
- Umber - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Umeh - Karen Traviss's Wess'har Wars series
- Ummo - religious cult/sect
- Umoth VIII (pronounced "yew-muth") - "The Maquis, Part II," Star Trek: Deep Space Nine Episode 21, Season 2, 5-1-1994
- Unan Besar - Poul Anderson's short story "The Plague of Masters" in the collection Sir Dominic Flandry: The Last Knight of Terra.
- Unarius - Unarius (UFO Religion)
- Unity - Mike Moscoe's The Price of Peace
- Ungruwarkh - Phyllis Gotlieb's Mindworlds
- Uno * Sol Bianca - Sol Bianca anime
- Urbanka - Doctor Who universe
- Unuk IV - The Orville universe
- Ur - John C. Wright's Null-A Continuum
- Uraill (formerly Zara III, home planet of the Urai) - John Scalzi's Fuzzy Nation, pp. 46-48
- Urbanka (Inokshi system) - "Four to Doomsday" episodes of Doctor Who
- Urchachka (Urrish home world) - David Brin's Infinity's Shore
- Urkupp - Star Wars universe
- Urras - Ursulla K. LeGuin's The Dispossessed
- Usurius (home planet of the Usurians) - "The Sunmakers" episodes of Doctor Who
- Utapau - Star Wars universe, Star Wars Episode III: Revenge of the Sith
- the Uttermosts Ursula K. Le Guin's The Left Hand of Darkness, p. 35
- Utopia - James Blish's Earthman Come Home, Pp. 248-252, Cities in Flight universe
- Utopia - J. T. McIntosh's A Planet Called Utopia
- Uxarieus – “Colony in Space,” Doctor Who Season 8, Story Number 58, (6 episodes) 4-10-1971 to 5-15-1071
V[]
- V'Harant (Gas Giant) - Michael Cobley's Humanity's Fire series, Seeds of Fire
- Vaathkree (one of the home planets of the Hutts) - Star Wars universe
- Vacationaria - John Scalzi's Zoe's Tale, p. 27
- Vacca IV - "Homeward," Star Trek: The Next Generation Episode 13, Season 7, 1-17-94
- Vada - Scott Westerfeld's The Risen Empire and The Killing of Worlds
- Vadris III - "Q-Less," Star Trek: Deep Space Nine, Episode 6, Season 1, 2-17-93
- Vagra II - "Skin of Evil," Star Trek: The Next Generation Episode 22, Season 1, 4-25-1988
- Vainamoinen - Thomas Harlan's House of Reeds
- Valakis - "Dear Doctor," Star Trek: Enterprise, Episode 12, Season 1, 1-23-02
- Valencia - Don D'Ammassa's Narcissus
- Valencia - Guy Immega's short story "Super-Mother Earth" in David Conyers et al., eds.s collection Extreme Planets
- Valenderay - Poul Anderson's Polesotechnic League universe
- Valhalla (Gas Giant) - Colin Harvey's Winter Song
- Valvida - Peter F. Hamilton's Pandora's Star, p. 185
- Valya (orbits the star Elena) - Poul Anderson's Mirkheim
- Vampire Planet - "State of Decay" episodes of Doctor Who
- Van de Kamp (Gas Giant) - Wil McCarthy's Lost in Translation
- Van Maanan's - C.J. Cherryh's Merchanter's Luck
- Vanaheim (Gas Giant) - Colin Harvey's Winter Song
- Vanamon - Robert Silberberg and Randall Garrett's short story "Catch a Thief" in their collection A Little Intelligence
- Vandor - “Death-Watch,” Blake’s 7 Episode C12, 3-24-1980
- Vandor IX (rocky planetoid in the unusual description of star system Vandor star system) - "We'll Always Have Paris," Star Trek: The Next Generation Episode 23, Season 1, 5-2-1988
- Vandos - Doctor Who comic strip Mr. Nobody
- Vargon III - "A Walk in the Dark," a short story in Arthur C. Clarke's collection Reach for Tomorrow, brief mention
- Varl (one of the home planets of the Huttts) - Star Wars universe
- Varonat - Star Wars universe
- Varos - "Vengeance on Varos" episodes of Doctor Who
- Varrack - Poul Anderson's short story "The Warriors from Nowhere" in the collection Sir Dominic Flandry: Last Knight of Terra
- Vassal (moon) - Larry Niven and Brenda Cooper's Building Harlequin's Moon
- Vasthold - Scott Westerfeld's The Risen Empire and The Killing of Worlds
- Veerstu - Timothy Zahn's The Third Lynx
- Vega - Lloyd Biggle Jr.'s The Rule of the Door
- Vega – “One Moment of Humanity,” Space 1999 Episode 3, Season 2, 9-25-1976
- Vega - "That Share of Glory," a short story by C.M. Kornbluth, Astounding, 1952
- Vega Prime - James C.G. Shirk's short story "Siren's Call" Raygun Revival July 8, 2011
- Vega II - James Blish's Cities in Flight universe
- Vega II - Hal Clement's Cycle of Fire, brief reference
- Vega III - Charles Huntington's Nightmare on Vega 3
- Vega III - "Invasion Report," a short story in Theodore R. Cogswell's collection The Well Around the World
- Vega IV - Samuel R. Delaney's Nova, brief reference
- Vega 4 - Ellis Weiner's National Lampoon's Doon
- Vega IV (Paramecium home planet) - Futurama
- Vega 7 - Huw Millward's The Mad Man of Vega-7
- Vega 9 - "Mirror, Mirror," Star Trek: The Original Series Episode 39, Season 2, 10-6-1967.
- Vega Four - Edmond Hamilton's Battle for the Stars
- Vega Prime - Robert A. Heinlein's Citizen of the Galaxy
- Vegaschrist - Roger Levy's The Rig'
- Vekta - Killzone video game
- Velada Borthan - Robert Silverberg's A Time for Change
- Valedon - Joan Slonczewski's Brain Plague - An Elysium Cycle Novel
- Velaines - Peter F. Hamilton's Pandora's Star
- Velara III (terraforming station) - "Home Soil," Star Trek: The Next Generation Episode 17, Season 1, 2-22-1988
- Velat Nol (R-836-II, Bejoran colony) - David R. George III's Star Trek: The Original Series novel Allegiance in Exile, p. 318
- Velda a.k.a. Veldq - Charles V. De Vet's Second Game
- Velgarth - Mercedes Lackey's Valdeman universe
- Velliran - Robert Silverberg's Planet of Death
- Velmor - Star Wars universe
- Velusia (Ocean Planet) - Star Wars universe
- Velvet - Maya Kathyrn Bohnhoff's short story "Simple Gifts" Analog January/February 2010, brief reference
- Vendaxa - Star Wars universe
- Vera Rubin's World - M. John Harrison's Empty Space: A Haunting, p. 34
- Verbena - Firefly/Serenity universe
- Verde - Elizabeth A. Lynn's A Different Light
- Vendikar a.k.a. Eminiar III - A Taste of Armageddon Star Trek: The Original Series
- Veneria (Swamp Planet) - Harry Harrison's Bill, The Galactic Hero;;;
- Ventax II - "Devils Due," Star Trek: The Next Generation, season 4, episode 13, 2-4-91
- Vericulon Four - Robert Kroese's novella Aye Robot: A Rex Nihilo Adventure, p. 144
- Verkerk's World - Eric Brown's Bengal Station
- Veridani - Scott Westerfeld's The Risen Empire, p. 75
- Vervain - Lois McMaster Bujold's Vorkosigan Saga
- Vesbius - Tony Daniel's Devil's Bargain, a Star Trek: The Original Series novel
- Vexvelt - Theodore Sturgeon's Case of the Dreamer and the short story "If All Men Were Brothers, Would You let One Marry Your Sister?" in Harlan Ellison's 1975 collection Dangerous Visions
- Vhrugy - John Scalzi's The Android's Sheep, p. 368
- Viccai - Timothy Zahn's Night Train to Rigel, p. 297
- Vielinger - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Vijun a.k.a. Vjun and Vjjun - Star Wars universe
- Viltvodle IV - The Hitchhikers Guide to the Galaxy
- Vincetori - Donald Kinsbury's Psychohistorical Crisis (set in Asimov's Foundation universe), brief reference, p. 112
- Vintan - Natural City 2003 film
- Vio - Iain M. Banks's Against a Dark Background
- Virgil - Richard Paul Russo's Inner Eclipse, brief mention p. 70
- Virginia a.k.a. Tyranaël - Elisabeth Vonarburg's Dreams of the Sea, A Game of Perfection
- Virgon 6 - "Love's Labours Lost in Space," Futurama, 4-13-1999
- Virtue - Mack Reynolds' Planetary Agent X
- Virtue in the Valley - Michael Cobley's Humanity's Fire series, Seeds of Fire, p. 335
- Vishnu (Tau Ceti III) - L. Sprague de Camp's collection The Continent Makers
- Vista Linda (Mining Planet) - Nancy Kress's Probability Moon, p. 38
- Vistula - "Planet of the Slave Girls," Buck Rogers in the 25th Century 1979 television series
- Vita 15 - Doctor Who universe
- Vixen a.k.a. Cerulia 4- Poul Anderson's Agent of Terran Empire: Ensign Flandry, We Claim These Stars, pp. 19-21
- Vjun a.k.a. Vijun and Vjjun - Star Wars universe
- Vjjun a.k.a. Vjun and Vijun - Star Wars universe
- Vlhan - Adam-Troy Castro's Emissaries From The Dead, p. 39
- Voga - Doctor Who universe
- Voltaire - L.E. Modesiit Jr.'s The Elysium Commission
- Voltaris Seven - Robert Kroese's short story "The Yanthus Prime Job"
- Vonok (Brolturan world) - Michael Cobley's Humanity's Fire series
- Vontor - Star Wars universe
- Vor - Poul Anderson's short story "The Warriors From Nowhere," in the collection Sir Dominick Flandry: The Last Knight of Terra
- Vorash (Tok’ra home world) - “Exodus,” Stargate SG-1 Season 4 and “Enemies,” Stargate SG-1 Season 5
- Voreg - Isaac Asimov's Foundation and Empire, Foundation universe
- Vortis – “The Web Planet,” Doctor Who Season 2, Story Number 13, 2-13-1965
- Vorpis - Samuel R. Delaney's Nova
- Vort - Invader Zim cartoon series
- Vox Romanus - Richard Paul Russo's The Rosetta Codex, p. 351
- Vulcan - Chris Bunch & Allan Cole's Sten
- Vulcan a.k.a. 40 Eridani 4 - Diane Duane's Spock's World (Star Trek Novel), Pp. 54-57
- Vulcan - “The Power of the Daleks,” Doctor Who Season 4, Story Number 30, 11-5-1966 through 12-10-1966
- Vwanchin - John Scalzi's The Android's Sheep, brief reference, p. 217
- Vytr - Brian Herbert and Kevin J. Anderson's Hellhole universe
W[]
- W-Planet - Jiang Yunsheng's short story "Boundless Love"
- Waitrose Two - M. John Harrison's Empty Space: A Haunting, brief reference, p. 195
- Walden - James Patrick Kelly's Burn
- Wallach-Eli - Ellis Weiner's National Lampoon's Doon
- Wardhaven - Mike Moscoe's The Price of Peace
- Warhead (former Kzin name for Canyon) - Larry Niven's The Ringworld Engineers
- Warlock - Andre Norton's Ordeal in Otherwhere and Storm Over Warlock
- Warmok - "The Watchmen of Warmok" radio episode of Space Patrol, November 6, 1954
- Warworld 3663Ω - Adam Christopher's novel Cold War
- Waterhole - Keith Laumer's Retief and the Warlords, brief reference p. 180
- Waycross - Jack C. Haldeman II's Perry's Planet'
- Wayland (Psadan home world) - Star Wars universe; Timothy Zahn's Heir to the Empire
- Waystonn (moon) - John Barnes's short story "The Lost Princess Man" in The New Space Opera 2
- We Made It - Larry Niven's Protector brief reference, and "Neutron Star," "At the Core," "Flatlander," "The Ethics of Madness," and "The Handicapped," short stories in Larry Niven's collection Neutron Star
- Weald Three - Murray Leinster's novel This World is Taboo fill text
- Wega - Isaac Asimov's Foundation, Foundation universe
- Wehtahn - Star Trek Universe
- Werel - Ursula K. LeGuin's Planet of Exile
- Wess'ej - Karen Traviss's City of Pearl; Crossing the Line
- Wezen - James Strong's Flight to the Stars
- Wheel - John Jakes's Tonight We Steal the Stars
- Westerix IV - Harry Harrison's short story "The Pliable Animal" in his collection 50 in 50
- Whileaway - Joanna Russ's The Female Man
- Whitefall - Firefly/Serenity universe
- Whittier (planet or moon) - Firefly/Serenity universe
- Wikonur - L.E. Modesitt's The Ethos Efect
- Willow-Wane - Alan Dean Foster's Humanax Commonwealth universe.
- Windsor-in-Exile - Dan Simmons’s Hyperion, p. 275
- Wildenwooly - "A Few Miles" and "Prometheus," short stories in Philip Jose Farmer's collection Down in the Black Gang.
- Wilson - Anderson Gentry's A Sky of Diamonds
- Wilson (Ocean Planet)- John Barnes's A Million Open Doors universe
- Winter a.k.a. Gethen (Arctic Planet) - Ursula K. Le Guin's The Left Hand of Darkness
- Winter's Eye - Richard Paul Russo's The Rosetta Codex, p. 307
- Wirtanen B - Jay Lake's short story "To Raise a Mutiny Betwixt Ourselves" in The New Space Opera 2
- Wizard - - Andre Norton's Storm Over Warlock
- Woden - Poul Anderson's Satan's World
- Wodenhammer - John Morressy's Frostworld and Dreamfire
- Wolf (47 Ursae Majoris 4, a Gas Giant) - Allen Steele's Coyote Rising
- Wolf - Marion Zimmer Bradley's The Door Through Space
- Wolfgang's World - Keith Laumer's Retief and the Warlords, p. 133
- Woman Wept - "Boom Town" episodes of Doctor Who
- Woolamurra - Robert A. Heinlein's Citizen of the Galaxy
- World - Nancy Kress's Probability Moon
- World 41 - Ursula K. Le Guin's "The Word For World Is Forest," a short story in Again, Dangerous Visions, edited by Harlan Ellison, Pp. 30-108
- World 88 (a.k.a. Prestno) - Ursula K. Le Guin's "The Word For World Is Forest," a short story in Again, Dangerous Visions, edited by Harlan Ellison, Pp. 30-108
- World X - M. John Harrison's Empty Space: A Haunting, p. 79
- Wormulon (Slurm production planet) - Futurama
- Wotex - Isaac Asimov's The Currents of Space
- Wunderland - Larry Niven's Protector brief reference, and "Neutron Star," "A Relic of the Empire," "Flatlander," "The Ethics of Madness," and "Grendel" short stories in Larry Niven's Neutron Star
- Wunderwelt - Norman Spinrad's The Void Captain's Tale
X[]
- X'xx-x (Sanitek) - Michael Rubens' The Sheriff of Yrnameer
- X-13 - Calvin and Hobbes' Spaceman Spiff planet
- X-23 - "The Last Question," a short story in Isaac Asimov's collection Nine Tomorrows listen to Asimov read the story
- X-351 - Calvin and Hobbes' Spaceman Spiff planet
- Xacryn (homeworld of the Xacryns and Vards) - Joseph Millard's The Gods Hate Kansas
- Xagnon Robert Kroese's novella Aye Robot: A Rex Nihilo Adventure, p. 74.
- Xagobah (Sluis Sector) - Star Wars universe
- Xanadu - Mack Reynolds' Planetary Agent X
- Xanadu - Poul Anderson's For Love and Glory
- Xandar - Marvel Cinematic Universe
- Xanthos - Zach Hughes's Closed System
- Xantil Major – “A Walk in the Dark,” a short story in Arthur C. Clarke's collection Reach for Tomorrow, brief mention
- Xarbia - Forbidden World 1982 film
- Xecho - Andre Norton's Plague Ship, brief mention
- Xenex - Peter David's Blind Man's Bluff (Star Trek: New Frontiers)
- Xeriphas (home planet of the Xeraphin) - "Time-Flight" episodes of Doctor Who
- Xeros - “The Space Museum,” Doctor Who Season 2, Story Number 15, 5-1-1965
- Xerxes (moon) - H. Beam Piper's Little Fuzzy
- Xerxes - Craig DiLouie's The Great Planet Robbery
- Xerxes - Lois McMaster Bujold's Vorkosigan Saga
- Xi Ceta - Lois McMaster Bujold's Vorkosigan Saga
- Xia the Centermost - John C. Wright's Null-A Continuum, p. 267
- Xichlotl (sister planet to Shaggai) - Cthulhu Mythos
- Xifor - James Gunn's Transcendental
- Xilmuch, a.k.a. "Planet IV of Altair" - Miriam Allen Deford and Anthony Boucher's "Mary Celestial," a short story in Bill Pronzoni and Barry N. Malzberg's collection Shared Tomorrow
- Xilobrax - James Blish's short story "This Earth of Hours" in Fantasy and Science Fiction June 1959
- Xindo Council Planet - "The Xindi," Star Trek: Enterprise Season 3, Episode 1, 9-10-2003
- Xindus - (original home world of the Xindi)
- Xipotetec - H. Beam Piper's Space Viking
- Xlephier Prime - Iain M. Banks's Excession
- Xochitl - H. Beam Piper's Space Viking
- Xodo - Brian Herbert and Kevin J. Anderson's Hellhole universe
- Xown - Iain M. Banks's The Hydrogen Sonata
Y[]
- Yadera Prime - "Shadowplay," Star Trek: Deep Space Nine, Season 2, Episode 16, 2-20-1994
- Yag'Dhul - Star Wars universe
- Yaga Minor - Star Wars universe
- Yalerta - John C. Wright's Null-A Continuum, p. 52
- Yalosia - "Improbable Cause," a Star Trek: Deep Space Nine, Season 3, Episode 20, 4-24-1995
- Yandro - Timothy Zahn's Night Train to Rigel
- Yanos - Paul McAuley's Into Everywhere p. 140
- Yavin (Gas Giant) - Star Wars universe
- Yavin 4 (Terrestrial Moon of Yavin) - Star Wars universe, "Star Wars: A New Hope"
- Yavin 8 (Terrestrial Moon of Yavin) - Star Wars universe
- Yavin 13 (Terrestrial Moon of Yavin) - Star Wars universe
- Yazoo Twelve - Keith Laumer's Retief and the Pangalactic Pageant of Pulchritude, brief reference, p. 70
- Yedeen (Gas Giant) - James Swallow's The Latter Fire' (Star Trek: TOS novel)
- Yelika - "The Homecoming," a Star Trek: Deep Space Nine, Season 2, Episode 1, 9-26-1993
- Yellowstone (Epsilon Eridani) - Alastair Reynold's Revelation Space universe
- Yeowe - Ursula K. LeGuin's Four Ways to Foregiveness
- Yaddith - Cthulhu Mythos
- Yiktor - Andre Norton's Moon of Three Rings
- Yinchorr - Star Wars universe
- Yirkalla - Richard A. Lupoff's Space War Blues
- Ylla - Lois McMaster Bujold's Vorkosigan Saga
- Ylyd - S.L. Viehl's Afterburn
- Ymir - Poul Anderson's short story "Hunters of the Sky Cave" in the collection Sir Dominic Flandry: The Last Knight of Terra
- Ymir - John Brunner's The World Swappers
- Ymir - Larry Niven and Brenda Cooper's Building Harlequin's Moon
- Yndyeri Duvo - Michael Cobley's Humanity's Fire series
- Yndyeri Tetro - Michael Cobley's Humanity's Fire series
- Yoi - Michael Rubens' The Sheriff of Yrnameer, brief reference
- Yonada - Carmen Carter's The Children of Hamlin, Star Trek: The Next Generation novel, p. 92
- Yr Wyddfa - Bruce Balfour's The Forge of Mars
- Yrnameer - Michael Rubens' The Sheriff of Yrnameer
- Yravo - Scott Mackay's Phytosphere, p. 173
- York 5 - Peter F. Hamilton's Pandora's Star, p. 127
- Yud - Ian Stewart and Jack Cohen's Heaven (SF novel), brief reference, p. 223
- Yugopotamia - The Fairly Odd Parents television series
- Yurakosi - Richard A. Lupoff's Space War Blues
Z[]
- Z-12 - Calvin and Hobbes's Spaceman Spiff
- Z'Ha'Dum - Babylon 5 universe
- Zakdorn - Star Trek universe
- Zalda, a.k.a. Dolium V - Star Trek universe
- Zalkon - Star Trek: The Next Generation, Episode 25, Season 3, 6-4-90
- Zaloris (Desert Planet) - Star Wars universe
- Zamper (home planet of the Zamps) - Doctor Who universe
- Zanak – “The Pirate Planet,” Doctor Who universe
- Zanti - "The Zanti Misfits" episode of The Outer Limits, December 30, 1962
- Zara - Poul Anderson's World Without Stars, brief reference
- Zarathustra - H. Beam Piper's Little Fuzzy
- Zardon - "Emergency Rations," a short story in Theodore R. Cogswell's collection The Well Around the World
- Zark - Calvin and Hobbes's Spaceman Spiff
- PLANET ZARKLOM 12 "Alien World To Help Out Syria Since This One Refuses To" The Onion parody. Vol. 48, Issue 11. See Imperial City.
- Zartok-3 - Calvin and Hobbes's Spaceman Spiff
- Zartron-9 - Calvin and Hobbes's Spaceman Spiff
- Zayin - Laurence James's Backflash
- Zede II - Zach Hughes's Closed System
- Zeltros - Star Wars universe
- Zeltoldimar - Kurt Vonnegut's Breakfast of Champions
- Zemlya (Arctic Planet) - Charles Stross' Glasshouse
- Zenerre - Iain Banks's The Algebraist, p. 65
- Zenk 12 - Raymond F. Jones & Lester del Rey's Weeping May Tarry
- Zenno – “Missing Link,” Space: 1999 Episode 2, Season 1, 1-22-1976
- Zeon - Isaac Asimov's Foundation universe
- Zeon - "Patterns of Force," Star Trek: The Original Series Episode 52, Season 2, 11-16-1968
- Zeos - "The Armageddon Factor" episodes of Doctor Who
- Zeta-4 - John M. Whalen "This Raygun For Hire: Forever Eden," Raygun Revival, Issue 55, December 2009
- Zeta Fornacis VI - Christopher L. Bennett's novel Tower of Babel, a Star Trek Enterprise novel
- Zeta Gibraltar, a.k.a. New Excalbia (planetoid) - Tony Daniel's Star Trek: The Original Series novel Savage Trade
- Zeta Minor - "Planet of Evil" episodes of Doctor Who
- Zeta Tucanae - Charles E. Gannon's Fire With Fire
- Zetar - "The Lights of Zetar," Star Trek: The Original Series, Episode 73, Season 3, 1-31-69
- Zetox (home planet of the character the Great Gazoo) – The Flintstones Season 6 (the Great Gazoo appears in 7 episodes)
- Zhar (Cadavine Sector) - Star Wars universe
- Zhong Guo - John Scalzi's Zoe's Tale', Old Man's War universe
- Zhu Rong (MX-37b) (Mining Planet) - Violet Addison and David Smith's short story "The Flight of the Salamander" in David Conyers et al.'s collection Extreme Planets
- Zia di Notte - Justina Robson's Natural History
- Zibalia Star Trek: The Next Generation, Episode 22, Season 3, 5-7-1990
- Zinkiwu - Rob Reid's novel Year Zero, p. 160
- Zinn's World - Gene Roddenberry's Andromeda
- Ziost - Star Wars universe
- ZK-5 - Calvin and Hobbes' Spaceman Spiff planet
- Zoave Twilight - Lois McMaster Bujold's Vorkosigan Saga
- Zoe - M.R. Meluch's The Ninth Circle
- Zog- Calvin and Hobbes' Spaceman Spiff planet
- Zok - Calvin and Hobbes' Spaceman Spiff planet
- Zokk - Calvin and Hobbes' Spaceman Spiff planet
- Zolan - Star Wars universe
- Zolfa Thura - "Meglos" episodes of Doctor Who
- Zolotoy (urban planet) - Poul Anderson's "The High Ones," a short story in The Horn of Time
- Zonama Sekot - Star Wars universe
- Zonda - "Shadow", Blake's Seven Episode B2
- Zondervan - Robert Kroese's novel Starship Grifters
- Zoob - Keith Laumer's The Return of Retief, brief reference, p. 99
- Zoranel - Isaac Asimov's Second Foundation
- Zorblatt 9 - SNL Sketch Alec Baldwin spoofs absurd, treasonous, pre-impeachment Donald Trump
- Zoria III (Dennitza) - Poul Anderson's short story "A Knight of Ghosts and Shadows," in the collection Sir Dominick Flandry: The Last Knight of Terra
- Zorg - Calvin and Hobbes' Spaceman Spiff planet
- Zørkan 5 - Rob Reid's novel Year Zero, p. 12
- Zoroaster - C.J. Cherryh's The Faded Sun Trilogy, p. 261
- Zorthia (hypothetical planet) - Jeff Goodell's nonfiction How to Cool the Planet
- Zubrin 5 - Futurama, brief reference
- Zula - The Zula Patrol television series
- Zule - Norman Spinrad's The Void Captain's Tale, p. 83
- Zungqu - Paul McAuley's Into Everywhere, p. 211
- Zurnl I (tidally locked) - Donald Kingsbury's Psychohistorical Crisis (set in Asimov's Foundation universe), p. 268
- Zurnl II (terrestrial) - Donald Kingsbury's Psychohistorical Crisis (set in Asimov's Foundation universe), pp. 54-56, 268, 273
- Zurnl II (Gas Giant- Donald Kingsbury's Psychohistorical Crisis (set in Asimov's Foundation universe), p. 268
- Zygor (home planet of the Zygons) - "The Bodysnatchers" episodes of Doctor Who
- Zyse - Iain M. Banks's The Hydrogen Sonata
Unknown and Unnamed Planets and Moons[]
- Unnmamed planet in Quadrant 904 in "The Squire of Gothos," Star Trek: The Original Series Episode 18, Season 1, 1-12-1967
- Unnamed home planet of the "Clokes" (orbiting Perseus Benthus 41X1900X12) in R.M. Meluch's novel The Ninth Circle
- Unnamed home planet of the alien Consu in John Scalzi's Old Man's War
- Unnamed home planet of the Furs in Nancy Kress's Crossfire
- Unnamed home planet of the Hwarhath and Red Folk in Eleanor Arnason's Ring of Swords
- Unnamed home planet of the Overlords in Arthur C. Clarke's Childhood's End
- Unnamed home planet of the Vines in Nancy Kress's Crossfire
- Unnamed (Iron Mass colony) mining planet orbiting a pulsar in Chris Roberson's Further: Beyond the Threshold
- Unnamed planet that is the setting for "A Walk in the Dark," a short story in Arthur C. Clarke's Reach for Tomorrow
- Unnamed planet in "That Which Survives," Star Trek: The Original Series Episode 69, Season 3, 10-24-1969
- Unnamed planet in "Shore Leave," Star Trek: The Original Series Episode 17, Season 1, 12-29-1966
- Unnamed planet that is the location of the Earth Colony in the Omicron Theta star system in "Datalore," Star Trek: The Next Generation Episode 12, Season 1, 1-18-1988
- Unnamed gas giant in David Brin's Startide Rising Uplift Series, p. 446
- Unnamed Vorlon home planet
- Unnamed planet - Pitch Black 2000 Film
- Unnamed planet orbiting mu Arae in Peter D. Ward's 2005 popular science book Life As We Do Not Know It. p. 238.
- Unnamed planet in the Proscean Could in Robert Kroese's novel Starship Grifters
Links[]
- APPLE
- Extraterrestrial Human Colonies
- Ecological Themes in Science Fiction
- Interstellar Empires
- Megastructure
- Arctic Planet
- Burial Planet
- Capital Planet
- Celtic Planet
- Desert Planet
- Exile Planet
- Farm Planet
- Free Market Planet
- Gangster Planet
- Gas Giant
- Germanic Planet
- Goldilocks Zone
- Home Planet
- Jewish Planet
- Jungle Planet
- Matriarchy Planet
- Military Planet
- Mining Planet
- Neutral Planet
- Ocean Planet
- Prison Planet
- Ribbon World
- Rigel (SF planets)
- Planetary Fragments
- Planets in Multiple Science Fiction Sources
- Planets Revealed as Fictional in the Fictional Work
- Rogue Planet
- Space Stations in Science Fiction
- Special Purpose Planet
- Swamp Planet
- Terrestrial Moon
- Theocratic Planet
- Vacation Planet
External Links[]
References[]
- Daniel Wallace and Scott Kolins. 1998. The Essential Guide to Planets and Moons (Star Wars). ISBN 0345420683.
- The October 2008 Science Non-Fiction Blog from Discover magazine makes the same observations made here about swapy Venus and arid Mars.