Maurice L. Smith (born December 13, 1961) is a retired American kickboxer and mixed martial artist. In kickboxing, he held the WKC (World Kickboxing Council) world light heavyweight championship, the WKA (World Kickboxing Association) world heavyweight championship, and the ISKA (International Sport Karate Association) world heavyweight championship. In mixed martial arts, he held the Heavyweight championship in Battlecade Extreme Fighting and the UFC, and became a member of the UFC Hall of Fame in 2017. A professional competitor since 1980, Smith has formerly competed in kickboxing for the companies All Japan Enterprise and K-1, Pancrase, RINGS, PRIDE, Strikeforce, International Fight League and RFA.