Atsushi Onita (大仁田 厚, Ōnita Atsushi, born October 25, 1957) is a Japanese actor, politician, and semi-retired professional wrestler. He is best known for his work in Frontier Martial-Arts Wrestling (FMW) and is credited with introducing Japan to the deathmatch style of professional wrestling. He held the FMW Brass Knuckles Heavyweight Championship a record seven times and headlined the first six editions of the company's premier event Anniversary Show from 1989 to 1995.