Selfish Machines is the second studio album by American rock band Pierce the Veil, released by Equal Vision on June 22, 2010. It was produced by Vic Fuentes and Mike Green, and recorded between late 2009 and early 2010. Fuentes wrote most of the songs by himself, and co-wrote three songs with ex-A Day to Remember guitarist Tom Denney.

Vocalist Jeremy McKinnon, also of A Day to Remember, guested on the track "Caraphernelia", which had its music video released on September 28. "Bulletproof Love" was released as the follow-up music video on July 7, 2011. Although the album was met with a varied critical reception, with reviewers criticizing the use of auto-tune on the tracks, it appeared on several American Billboard charts, including its Top Heatseekers and the top 200 chart. The album was reissued, with remixed production, on September 24, 2013.

In an interview with AbsolutePunk in early 2009, guitarist and vocalist Vic Fuentes revealed that Pierce the Veil's next album would be influenced by their fans. Fuentes also said in the interview that he was uncertain when the album would be released, but that it would be released by Equal Vision. The band were writing and demoing new material at their home studio in November 2009.Selfish Machines, along with the band's next album Collide with the Sky (2012), was written in a cabin that belonged to Fearless Records president Bob Becker.

The album was recorded between December 2009 and January 2010 in Los Angeles with producer Mike Green, with a planned release later that year. Green was selected as the producer as albums he had previously worked on "sounded amazing", as Fuentes commented, and that he was "a very down to earth and passionate person." It was revealed on December 27, 2009 that Mike Fuentes had recorded all the drum tracks in one day, at Ocean Studios in Burbank, California. By January 11, 2010, the vocals and keyboard tracks had yet to be recorded but the album was otherwise complete. A studio update posted on February 19 noted there was eights days remaining to record the vocals. Fuentes later said he wasn't going to be recording in Los Angeles again as there "were a lot of distractions that we didn't need."

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