Finian's Rainbow is a musical with a book by E. Y. Harburg and Fred Saidy, lyrics by Harburg, and music by Burton Lane, produced by Lee Sabinson. The original 1947 Broadway production ran for 725 performances, while a film version was released in 1968 and several revivals have followed.

Edgar Yipsel Harburg was an American popular song lyricist and librettist who worked with many well-known composers. He wrote the lyrics to the standards "Brother, Can You Spare a Dime?", "April in Paris", and "It's Only a Paper Moon", as well as all of the songs for the film The Wizard of Oz, including "Over the Rainbow". He was known for the social commentary of his lyrics, as well as his leftist leanings. He championed racial and gender equality and union politics. He also was an ardent critic of religion.