"Planets of the Universe" is a song by American singer/songwriter Stevie Nicks. The song was first recorded as a demo during the recording sessions for the 1977 Fleetwood Mac album, Rumours, and this demo was included on the 2-disc Rumours expanded re-release in 2004. The song earned Nicks a nomination for the Grammy Award for Best Female Rock Vocal Performance.

In 2001, Nicks released an edited version of the song (omitting almost 2 minutes of material) on her solo album Trouble in Shangri-La, having recorded a completely new full-length version in 2000.

"Planets of the Universe" was a number-one hit on the U.S. Hot Dance Club Play chart in August 2001.

The song was released on 2 CD singles, one of which was a maxi-single with dance remixes and the full-length, unedited 2000 version. A double 12-inch vinyl set was also issued as a limited edition in the US and featured the track listing of the CD maxi-single. Both physical CD singles and 12-inch vinyl release are no longer available from Reprise Records.

The 'extended album version' is a misnomer as it is actually the full-length, unedited, newly recorded 2000 version, including extra lyrics and coda, previously only demoed in the 1976 Rumours sessions.

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