Strikeforce was an American mixed martial arts organization. It crowned male champions in the lightweight, welterweight, middleweight, light heavyweight and heavyweight divisions, and female champions in featherweight and bantamweight. World champions Men's championships Heavyweight Championship to Light Heavyweight Championship to Middleweight Championship to Welterweight Championship to Lightweight Championship to Women's championships Women's Featherweight Championship to Formerly known as the Women's Lightweight Championship and the Women's Middleweight Championship Women's Bantamweight Championship to Formerly known as the Women's Welterweight Championship U.S. champions Middleweight U.S. Championship to Lightweight U.S. Championship to Tournament winners Records Most wins in title bouts Most consecutive title defenses Champions by nationality The division champions include only linear and true champions. Interim champions who have never become linear champions will be listed as interim champions. Fighters with multiple title reigns in a specific division will also be counted once. Runners-up are not included in tournaments champions. See also List of Strikeforce alumni List of Strikeforce events List of current mixed martial arts champions List of Bellator MMA champions List of Dream champions List of EliteXC champions List of Invicta FC champions List of ONE Championship champions List of Pancrase champions List of Pride champions List of PFL champions List of Shooto champions List of UFC champions List of WEC champions Mixed martial arts weight classes References Strikeforce Champions, List Of