Adolf Rosenberger (Born: 8 April 1900 in Pforzheim, Germany. Died: 6 December 1967 in Los Angeles, California, USA) was a successful Jewish businessman who mainly raced Mercedes and Benz cars in the 1920s. His successes and records included wins at Avus, Stuttgart Solitude in 1924 and 1925, the Kasseler Herkules Hillclimb and the Klausenpassrennen. At the 1926 German Grand Prix, Rosenberger was involved in one of the numerous accidents in treacherous conditions. He survived a crash into the timekeepers' box, which killed its three occupants.