WaveRunner is a trademarked name and type of personal water craft (PWC) produced by the Yamaha Motor Company.

[1] Unique to the WaveRunner among PWCs is the spout of water that shoots into the air from the rear of the vehicle, a visual brand identifier that exists as a trademark of Yamaha.

[2] The first personal watercraft was designed and built in the 1960s by an American motorcycle enthusiast banker, Clayton Jacobson II, and produced and marketed by Bombardier in a licensing agreement.

First produced that year, the WaveRunner (then called Marine Jet 500T) was the world's first saddle watercraft, a model which today dominates the market.

In 1990, the WaveRunner III 650 (Marine Jet 650TL) was the first personal watercraft to offer a three-person seat and reverse.