Ridin' on a Rainbow is a 1941 American Western musical film directed by Lew Landers and starring Gene Autry, Smiley Burnette, and Mary Lee. Written by Bradford Ropes and Doris Malloy, based on a story by Ropes, the film is about a singing cowboy whose investigation of a bank robbery takes him to a showboat, where he finds that a teenage singer's father has been working with the robbers to provide for her future. The film received an Academy Award nomination for best original song for "Be Honest with Me".