The Klemm Leichtflugzeugbau GmbH ("Klemm Light Aircraft Company") was a German aircraft manufacturer noteworthy for sports and touring planes of the 1930s.
The company was founded in Böblingen in 1926 by Dr. Hanns Klemm, who had previously worked for both Zeppelin and the Daimler Aircraft Company.
While working at Daimler Klemm had developed his ideas for a light aircraft, to be made of wood for strength and lightness. It should be easy to manufacture, aerodynamically efficient with low mass and wing loading, for which a low-powered engine would be sufficient. Klemm's first design, the Daimler L.15, was a light aircraft with a single 7.5 hp (5.5 kW) Indian motorcycle engine. This aircraft flew in early 1919, although a 12 hp (8.8 kW) Harley-Davidson engine was used instead of the originally-envisioned engine.
Klemm then designed a squared-off version of the cylindrical fuselage of the L.15, which could be more easily built, which he designated the L.20, and he founded his own company to produce it. This aircraft, of which more than 100 were built, was powered by a 20 hp (15 kW) Daimler engine designed by Ferdinand Porsche.
Klemm is a German surname. Notable people with the surname include: