13 was the first compilation album by The Doors. Released in November 1970, it debuted at Number 75 on December 19, 1970, peaked at Number 25 for two weeks (January 2 and January 9, 1971) and was off the charts after May 8. It spent a total of 21 weeks on the charts. The album, along with the band's second compilation from 1972, Weird Scenes Inside the Gold Mine, has never been issued on compact disc. It is the only one to have been released before lead singer Morrison's death. It does not include songs from L.A. Woman, which was released in 1971. The album's back cover features the band posing with a small bust of occultist Aleister Crowley.
In the UK, the LP was released through Elektra and Kinney Group Records Ltd (EKS-74079). The track listing was the same as the US release but individual authorship was listed for each track. The duration of the tracks also differed markedly from that listed on the US version.