The Kawasaki Ninja 125 is a motorcycle in the Ninja sport bike series from the Japanese manufacturer Kawasaki that was introduced in 2018. It is powered by a single-cylinder engine that produces a claimed .
It is the second Ninja sport bike to have a four-stroke single, after the Ninja 250SL.
The Kawasaki Z125 (codenamed BR125) is a Z series motorcycle introduced in 2018, and differing from the Ninja primarily in its trim. It is powered by a single-cylinder engine that produces a claimed .