- Helicon—Home of Psychohistory founder, Hari Seldon in Isaac Asimov's Foundation series
- Lagash—Isaac Asimov's Nightfall (planet where each day lasts two thousand years)
- Solaria — Isaac Asimov's Robot series. People grow up isolated, and eventually lead totally solitary lives, interacting only via telepresence.
- Synnax—Isaac Asimov's Galactic Empire series and Foundation series—The birthplace of Gaal Dornick, it was in a stellar system orbiting a region called the 'blue drift'.
- Terminus—Home of the Foundation in Isaac Asimov's Foundation series
- Trantor—Isaac Asimov's Galactic Empire series and Foundation series—A planet-wide city