Masakatsu Funaki (船木 誠勝) is a Japanese mixed martial artist and professional wrestler, who has previously wrestled in All Japan Pro Wrestling, New Japan Pro Wrestling, PWFG, UWF and Wrestle-1. He is also the co-founder of Pancrase, one of the first mixed martial arts organizations and non-rehearsed shoot wrestling promotions (following five years after the inception of Shooto but predating America's Ultimate Fighting Championship).