Kinniku Banzuke: Muscle Wars 21 (筋肉番付 〜マッスルウォーズ21〜, Kinniku Banzuke 〜Massuruu~ōzu 21〜, lit. "Muscle Ranking: Muscle Wars 21") is a sports game, developed and published by Konami, which was released in Japan in 2001 on PlayStation 2. It is the fifth Kinniku Banzuke game released for the PlayStation console.