Xanadu is a musical comedy with a book by Douglas Carter Beane, music and lyrics by Jeff Lynne and John Farrar, based on the 1980 cult classic film of the same name which was, in turn, inspired by the 1947 Rita Hayworth film Down to Earth. The title is a reference to the poem, Kubla Khan, or A Vision in a Dream. A Fragment, by Samuel Taylor Coleridge.

The musical opened on Broadway in 2007. It has earned an Outer Critics Circle Award for Best Musical and a Drama Desk Award for Best Book. It was nominated for Tony Awards for Best Musical and Best Book.