John Kenneth Cook (born December 18, 1958, in Van Nuys, California)[1] is an American former international motorcycle speedway rider.
He is also attributed with introducing Jet Ski watercraft to Australia, New Zealand and Europe where he became the first European Champion in closed course competition.
During a speedway hiatus, he also competed as an American Expert Jet Ski racer and was ranked #4 in the World while racing underpowered craft.
Cook continued to ride well into his 40s and almost qualified for the Speedway Grand Prix Series for 2002, only failing at the 2001 Intercontinental Final stage.
In October 2006 Cook suffered a serious motocross accident while racing at Washougal Washington in which he hurt his back quite badly and had to have metal rods inserted.