Dnepr (Russian: Днепр; Ukrainian: Дніпро) is a motorcycle brand produced in Kiev, Ukraine. It has been in use since 1967.

Motorcycles have been produced in Kiev since 1946 at the Kiev Motorcycle Plant (Kyivskyi Mototsykletnyi Zavod (KMZ), Київський Мотоциклетний Завод (КМЗ)). Initial production was of a 98cc 2-stroke model that was confiscated from the German firm Wanderer as reparations. The original design for KMZ heavy motorcycles, and their cousin the IMZ, is taken from the pre-WWII German BMW motorcycle R71, which the Soviet Union licensed in 1940. The plant and equipment needed to make the M-72 (the Soviet derivative of the BMW R71) was transferred from the Gorkiy Motorcycle Plant (Gorky Mototsikletniy Zavod, GMZ located in the city of Gorkiy (Nizhny Novgorod) in 1949. The first batch of M-72 motorcycles was produced in 1952 with the supply of 500 engines from IMZ. In 1958 KMZ replaced the plunger framed M72-N with the swingarm framed K-750. (This frame may have been modeled after the post 1955 BMW duplex frame). In 1964 KMZ introduced a military model, the MV-750 with a differential two-wheel drive to the sidecar wheel. In 1967, to celebrate the 50th Anniversary of the Great October Socialist Revolution, KMZ released their first OHV engine in the "Dnepr" K-650. Unlike the earlier sidevalve engines with their roller bearing crankshafts, this engine featured a sleeve bearing crankshaft as found in the WWII Zundapp KS750. The K-650 was superseded by model MT-9 650cc, which was available in both solo and sidecar models (often referred to as the best "Cossack" as it was reliable and had all the good features). The MT-10 was the first Soviet motorcycle to feature 12volt electrics.

The Dnepr is famous for its off-road capability. Armed services models equipped with sidecars had two-wheel drive and as much as fifteen centimetres (6 in) of ground clearance. The present engine is a 650cc OHV boxer twin. Modern models are sold with engines ranging from the factory standard 650 to 750 and 1000cc. Some models have been spotted sporting aftermarket 1000 Hatz diesel, BMW, and even VW car engines.

These motorcycles have featured in many films like Indiana Jones and used prominently in the movie Garden State, with Zach Braff.

Between 1973 and 1979 Dnepr was one of the makes marketed by Satra in the United Kingdom as Cossack motorcycles.

Since demise of U.S.S.R. the factory had fallen on very hard times. Production decreased to only remnants of former glory. All shops were closed, and machine tools were taken out of the city limits.