The Threepenny Opera is a German "play with music" by Bertolt Brecht, adapted from a translation by Elisabeth Hauptmann of John Gay's 18th-century English ballad opera, The Beggar's Opera, and four ballads by François Villon, with music by Kurt Weill. Although there is debate as to how much, if any, contribution Hauptmann might have made to the text, Brecht is usually listed as sole author.

Eugen Berthold Friedrich Brecht, known professionally as Bertolt Brecht, was a German theatre practitioner, playwright, and poet. Coming of age during the Weimar Republic, he had his first successes as a playwright in Munich and moved to Berlin in 1924, where he wrote The Threepenny Opera with Elisabeth Hauptmann & Kurt Weill and began a life-long collaboration with the composer Hanns Eisler. Immersed in Marxist thought during this period, he wrote didactic Lehrstücke and became a leading theoretician of epic theatre and the Verfremdungseffekt.