DKW is a defunct German car and motorcycle marque. The name derives from Dampf-Kraft-Wagen (German: steam-driven car).

In 1916, the Danish engineer Jørgen Skafte Rasmussen founded a factory in Zschopau, Saxony, Germany, to produce steam fittings. In the same year, he attempted to produce a steam-driven car, called the DKW. Although unsuccessful, he made a two-stroke toy engine in 1919, called Des Knaben Wunsch—"the boy's desire". He also put a slightly modified version of this engine into a motorcycle and called it Das Kleine Wunder—"the little marvel". This was the real beginning of the DKW brand: by the 1930s, DKW was the world's largest motorcycle manufacturer.

In 1932, DKW merged with Audi, Horch and Wanderer, to form the Auto Union. Auto Union came under Daimler-Benz ownership in 1957, and was then purchased by the Volkswagen Group in 1964. The last DKW car was the F102 which ceased production in 1966; after this the brand was phased out.

DKW cars were made from 1928 until 1966. They always used two-stroke engines and, from 1931, the company was a pioneer in front-wheel drive and transverse mounting. The most well-known cars made before World War II, bearing model names F1 through F8 (F for Front), had front-wheel drive and a transversely mounted two-cylinder engine. Displacement was 600 or 700 cc, power was 18 to 20 hp (15 kW). These models also featured an innovation with a generator that doubled up as a self-starter, which was mounted directly on the crankshaft. This was known as a Dynastart.