Rapp Motorenwerke GmbH was a German aircraft engine manufacturer based in Munich, Bavaria. Founded in 1913, the firm changed its name in 1917 to Bayerische Motoren Werke GmbH (BMW). The company later became known as after its engine-production assets and the BMW name were transferred in 1922 to Bayerische Flugzeugwerke (formerly Otto Flugmaschinenfabrik), which was then renamed to Bayerische Motoren Werke AG and subsequently evolved into the automotive manufacturer known today as BMW.