This is a list of minor planets in Isaac Asimov's Foundation, Robot, and Empire series. Most are mentioned only by name.

61 Cygni

The star system 61 Cygni, in the Sirius Sector , is advanced by Lord Dorwin as the potential site for a planet of origin for the human species. Lord Dorwin cites four planets in the Sirius Sector, and Arcturus in the Arcturus Sector , as potential original worlds. This fact seems to be contradicted by information given in Foundation and Earth.

Asperta

Asperta was a planet mentioned by Mayor Indbur in Foundation and Empire, as a planet to which the Foundation protested some 'sharp trade practises'.

Baronn

Baronn is a planet mentioned in Pebble in the Sky, as the birthplace of Bel Arvarden .

Bonde

Bonde is mentioned by Mayor Indbur in Foundation and Empire, one of the planets in the Foundation.

Cil

Cil is a planet mentioned in Second Foundation. It lay on the normal trade route between Kalgan and Tazenda.

Formalhaut

Formalhaut is a planet mentioned in the Empire Series whose inhabitants speak an extreme dialect of Galactic Standard Speech. The name is presumably meant to be a variant of Fomalhaut, a star in the real universe.

Horleggor

Horleggor was the site of the Mule's first victory against the Foundation.

Livia

Livia is a planet briefly mentioned in Foundation and Earth. It was the home world of the scientist Humbal Yariff , who attempted to find the location of Earth.

Lyonesse

Lyonesse is a planet mentioned by Mayor Indbur in Foundation and Empire, forming a trade agreement with the Foundation. It was conquered by the Mule in 300 F.E.

Lystena

Lystena is a planet on the outer edge of the Galaxy mentioned in Forward the Foundation.

Mandress

Mandress is a planet mentioned in Foundation's Edge. It was in the inner provinces of the old Galactic Empire, to which Harla Branno served as an ambassador in her earlier years.

Mores

Mores was a planet mentioned by Mayor Indbur in Foundation and Empire, that completed a commercial treaty with the Foundation in 300 F.E.

Ophiuchus

Ophiuchus was a barbarous world once thought to have developed before hyperspatial travel.

Rhampora

Rhampora was famous for its Oysters.

Salinn

Salinn was the first planet to be aware of the Mule's advance on the Foundation.

Sarip

Sarip is a planet near Anacreon

Smushyk

Smushyk is a planet mentioned in Second Foundation, located in the Galactic Periphery.

Vincetori

Vincetori is a planet mentioned in Second Foundation. It lay on the standard trade route between Kalgan and Tazenda.

Voreg

Voreg was a planet in the Anacreon Prefect, close to the capital system Anacreon.