Regulus or Regulus V orbiting Alpha Leonis is a planet in the “The Vengeance Factor” episode of Star Trek: The Next Generation, (Episode 9, Season 2, 11-20-1989). The planet is home to eel-birds of Regulus V and Regulan bloodworms.


Regulus IV is named as a planet in Robert Silberberg and Randall Garrett's short story "Deus Ex Machina" in their collection A Little Intelligence.