Algol is the name of a real star in the constellation Perseus and planets in multiple works of science fiction.
- The Hitchhiker's Guide To The Galaxy
- “Encounter at Farpoint, Part 1,” Star Trek: The Next Generation Episode 1, Season 1, 9-28-1987
- "That Share of Glory," a short story by C.M. Kornbluth, Astounding, 1952 (Algol IV)
- Barry N. Malzberg's novel On A Planet Alien, p. 384 (Algol VII)