Polly is a ballad opera with text by John Gay and music by Johann Christoph Pepusch. It is a sequel to Gay's The Beggar's Opera. Due to censorship, the opera was not performed in Gay's lifetime. It had its world premiere on 19 June 1777 at the Haymarket Theatre in London. A revised and edited version of the score by Clifford Bax and Frederic Austin premiered on 30 December 1922 at the Kingsway Theatre in London.