"Peek-a-Boo!" is a song by American new wave band Devo, written by Mark Mothersbaugh and Gerald Casale. It appears on their fifth studio album Oh, No! It's Devo (1982). The single features the non-album track, "Find Out" as its B-side, which was also released as a bonus track on the Infinite Zero Archive/American RecordingsCD reissue of the album. "Find Out" was later re-recorded by Devo's bassist Gerald Casale's solo project Jihad Jerry & the Evildoers for the studio album Mine Is Not a Holy War (2006). According to Gerald Casale from the audio commentary for their film, The Complete Truth About De-Evolution, "Peek-a Boo! was a song about Devo's circus-like look and the dark side of human nature, the side we try to keep secret, the side we try to deny, in this Christian world where we're only supposed to have happy endings and only supposed to be good, and instead Devo is dealing with what evil is here in a very light-hearted manner."