Heigo Hamaguchi (濱口 平吾, Hamaguchi Heigo, born August 31, 1947) is a Japanese retired professional wrestler, better known by the ring name Animal Hamaguchi (アニマル浜口, Animaru Hamaguchi). During his career he was recognized as a talented tag team wrestler despite his small size for a heavyweight, and today he is recognized as a trainer in both professional and amateur wrestling.