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

206 lb to 265 lb

Light Heavyweight Championship

186 lb to 205 lb

Middleweight Championship

171 lb to 185 lb

Welterweight Championship

156 lb to 170 lb

Lightweight Championship

146 lb to 155 lb

Women's championships

Women's Featherweight Championship

136 lb to 145 lb Formerly known as the Women's Lightweight Championship and the Women's Middleweight Championship

Women's Bantamweight Championship

126 lb to 135 lb Formerly known as the Women's Welterweight Championship

U.S. champions

Middleweight U.S. Championship

170 lb to 185 lb

Lightweight U.S. Championship

145 lb to 155 lb

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.