Valentijn Overeem (Dutch pronunciation: [ˈvaːləntɛin ˈoːvəreːm]; born 17 August 1976) is a retired Dutch professional mixed martial artist and kickboxer currently signed with United Glory. A professional competitor since 1996, he has previously fought for the PRIDE Fighting Championships, RINGS, KSW, the World Fighting Alliance, K-1, M-1 Global, Its Showtime, World Victory Road, and Strikeforce. He is the older brother of fellow MMA Superstar Alistair Overeem. Overeem has notable wins over fighters such as Randy Couture and Renato Sobral.