Happy End is a three-act musical comedy by Kurt Weill, Elisabeth Hauptmann, and Bertolt Brecht which first opened in Berlin at the Theater am Schiffbauerdamm on September 2, 1929. It closed after seven performances. In 1977 it premiered on Broadway, where it ran for 75 performances.

Kurt Julian Weill was a German-born American composer active from the 1920s in his native country, and in his later years in the United States. He was a leading composer for the stage who was best known for his fruitful collaborations with Bertolt Brecht. With Brecht, he developed productions such as his best-known work, The Threepenny Opera, which included the ballad "Mack the Knife". Weill held the ideal of writing music that served a socially useful purpose, Gebrauchsmusik. He also wrote several works for the concert hall and a number of works on Jewish themes. He became a United States citizen in 1943.