Jean-Claude Leuyer, or simply Jean Claude, is an American former super heavyweight kickboxer. He was a six-time world champion, holding titles in four different organizations, and competing in sixteen world title fights. He holds notable wins over Rob Kaman and Tomasz Kucharzewski in K-1.

Since his retirement from fighting, Leuyer has appeared in a number of films as an actor and stunt man, including Jet Li's Fearless.[14] He is also a trainer at the American Kickboxing Academy.