"Unbelievers" is a song by American indie pop band Vampire Weekend. Written by the band's lead singer Ezra Koenig and multi-instrumentalist Rostam Batmanglij, and produced by Ariel Rechtshaid and Batmanglij, the song was released as the third single from their third studio album Modern Vampires of the City in August 2013. The band initially premiered "Unbelievers" in a live performance on Jimmy Kimmel Live on October 31, 2012. They also performed the song live on an episode of Saturday Night Live prior to it being released as a single.

Modern Vampires of the City is the third studio album by American indie rock band Vampire Weekend. It was released on May 14, 2013, by XL Recordings. The group began to write songs for the album during soundchecks on the supporting concert tour for their previous album, 2010's Contra. After a period in which each member explored individual musical projects, they regrouped and continued working on Modern Vampires of the City in 2011. With no deadline in mind, the band brought in an outside record producer for the first time, Ariel Rechtshaid, to record the album.