The Kawasaki KX 250F is a liquid-cooled DOHC 249 cc (15.2 cu in) four-valve four-strokesingle motocross motorcycle made by Kawasaki.

The Kawasaki KX250F was co-developed with the Suzuki Motor Co. under their unique joint venture that started in 2002. This joint venture produced the Suzuki RMZ250 which is the mechanical twin to the KX250F but is in yellow Suzuki markings. The first year of the KX250F was 2004 and it saw immediate success in Supercross and Motocross racing capturing the Triple-Crown of Motocross (the East/West SX championships as well as the national MX title).