Jakob Lenz is a one-act chamber opera by Wolfgang Rihm, written 1977–78 to a libretto by Michael Fröhling after Georg Büchner's 1836 novella Lenz which in turn is based on an incident in the life of the German poet Jakob Michael Reinhold Lenz (1751–1792). Rihm dedicated the opera to his teacher, . Rihm received for Jakob Lenz the Beethoven Prize of the city of Bonn in 1980.