Keisuke Itagaki(板垣恵介Itagaki Keisuke, born April 4, 1957) is a Japanese manga artist. His most famous works are Baki the Grappler. Prior to becoming a manga artist, he served 5 years in the 1st Airborne Brigade of the Japan Ground Self-Defense Force. During his service he practiced amateur boxing, and has competed in the National Sports Festival. He also holds a degree in Shorinji Kempo, which he has practiced since he was a teenager.