The middleweight division in mixed martial arts refers to different weight classes: The UFC's middleweight division, which groups competitors within 171 to 185 lb The Shooto's middleweight class, which refers to competitors between 155 and 170 lb The ONE Championship's middleweight division follows the Pride FC model, with an upper limit of 93 kg The Road FC's middleweight division, with an upper limit of 185 lb. Wikipedia