110 minutes | Writers: Bertolt Brecht (story) (as Brecht), Léo Lania (adaptation) (as Lania) | Director Georg Pabst | German with English subtitles

The Threepenny Opera (German: Die 3-Groschen-Oper) is a 1931 German musical film directed by G. W. Pabst. It was produced by Seymour Nebenzal's Nero-Film for Tonbild-Syndikat AG (Tobis), Berlin and Warner Bros. Pictures GmbH, Berlin. The film is loosely based on the 1928 musical theatre success, The Threepenny Opera by Bertolt Brecht and Kurt Weill. As was usual in the early sound film era, Pabst also directed a French language version of the film, L'Opéra de quat'sous, with some variation of plot details (the French title literally translates as "the four penny opera"). A planned English version was not made.

The Threepenny Opera differs in significant respects from the play and the internal timeline is somewhat vague. The whole of society is presented as corrupt in one form or another. Only some of the songs from the play are used, in a different order. Bertolt Brecht and Kurt Weill, the playwright and composer of the stage play that the film is based on, were originally hired to adapt the play for film, but Brecht quit in the middle of production, while Weill continued working on the film until he was fired. The two each sued Warner Bros. and the German production company on the basis that sale of the rights stipulated that nothing in the stage production could be changed for the film. Brecht and Weill intended the piece as a satire on capitalism, and claimed that the ideological basis of the story was softened by director G. W. Pabst, who wanted the film to be more entertaining. Brecht was accused of breach of contract and his suit was rejected, but Weill won his suit.

In August 1933, Pabst’s film was banned by the Nazis, and the negative and all prints that could be located were destroyed. The film was later reconstructed in 1960 by Thomas Brandon with the assistance of the Museum of Modern Art. Not all the songs from the stage production were used in the film. Songs that were used include The Ballad of Mackie Messer, Love Duet, Barbara Song, Is It a Lot I'm Asking?, The Ballad of the Ship with Fifty Cannons, The Cannon Song, and Song of the Insufficiency of Human Endeavor.