Karl Rapp (* 24 September 1882 in Ehingen (Danube); " 26. May 1962 in Locarno) was founder and owner of the Rapp Motorenwerke.
Positions before foundation of the Rapp Works included Daimler.Position as engineer and operations manager at aircraft company Flugwerke Deutschland, Munich. Rapp founded the Rapp Workson the site of Flugwerke Deutschland after the company went into liquidation.After he left the Rapp Works (immediately renamed BMW) he became chief engineer and head of the Aeroengine Department ofthe L.A. Riedlinger Machine Factory where he was probably employed until October 1923.Rapp lived in Switzerland from 1934 and ran a small observatory making solar observations.Died in 1962 in Locarno.Functions at BMW: Established the company Rapp-Motorenwerke GmbH (on October 27, 1913). He founded the company inorder to build an engine for the 2nd Kaiser's Trophy Competition, but it was not ready in time.At the beginning of the First World War, the Rapp Works was one of the key Bavarian companies for the war effort, and appearedto have gained a certain reputation. This was despite the fact that none of the designs and developments achieved any realsuccess. Although the Prussian Army Administration rejected a delivery of Rapp engines as unsuitable, the Bavarian ArmyAdministration and the Imperial Naval Office of the Imperial Austro-Hungarian Army Administration continued to order Rappengines.When Rapp resigned because of ill-health in 1916 the Rapp Works were renamed the Bayerische Motorenwerke GmbH.