"Perfect World" is a song written by James Mercer and Brian Burton of the American alternative rock band Broken Bells.

A "Perfect World" promotional single was released for streaming on the Australian branch of commercial music streaming service Spotify on February 4, 2014, becoming the third release by the band in promotion of After the Disco, after singles "Holding On for Life" and "After the Disco."

The song was written in the context of After the Disco, where most of the lyrics and music center around a common theme of the party and the morning after, usually in the form of a metaphor for a break-up in a relationship.

Mercer spoke to National Public Radio, stating: "Perfect World" was first written and recorded well into the recording sessions for After the Disco, borrowing elements from the title track, "After the Disco", a track which they had finished working on by the time "Perfect World" had been conceived.

Two versions of "Perfect World" were originally created by the band; one version presenting the song as a lighter, yet fast-paced melody and one presenting it as a heavier, slower melody.