Happy Arcadia is a musical entertainment with a libretto by W. S. Gilbert and music originally by Frederic Clay that premiered on 28 October 1872 at the Royal Gallery of Illustration. It was one of four collaborations between Gilbert and Clay between 1869 and 1876. The music is lost. The piece is a satire on the genre of pastoral plays in which the characters, who each wish that they could be someone else, have their wish granted, with unhappy results.