Keep on the Sunny Side is a popular American song originally written in 1899 by Ada Blenkhorn (1858-1927) with music by J. Howard Entwisle (1866-1903). The song was popularized in a 1928 recording by the Carter Family. A recording of the song with The Whites was featured in the 2000 movie O Brother, Where Art Thou?.
A variant, "Stay on the Sunny Side", is sometimes sung as a campfire song. It features only the chorus, with some altered lyrics ("You'll feel no pain as we drive you insane"), with knock-knock jokes being told between choruses.
In 1899 Ada Blenkhorn was inspired to write the Christian hymn by a phrase used by her nephew. Blenkhorn's nephew was disabled and always wanted his wheelchair pushed down "the sunny side" of the street. The Carter Family learned of the song from A. P. Carter's uncle who was a music teacher, and they recorded the song in Camden, New Jersey in 1928. "Keep on the Sunny Side" became their theme song on the radio in later years. A.P. Carter's tombstone has a gold record of the song embedded in it.
In later years, the Carter Family treated "Keep on the Sunny Side" as a theme song of sorts. A 1964 album by the Carter Family (with special guest vocalist Johnny Cash) was titled Keep On the Sunny Side, and Cash recorded a version for his 1974 album The Junkie and the Juicehead Minus Me accompanied by June Carter Cash, Johnny Cash's daughter Rosanne Cash and June Carter's daughters Carlene Carter and Rosie Nix Adams. June Carter Cash also recorded a version for her final solo album, Wildwood Flower, released posthumously in 2003.