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 (77.5 to 84 kg)
• The Shooto's middleweight class, which refers to competitors between 155 and 170 lb (70.3 and 77.1 kg)
• The ONE Championship's middleweight division follows the Pride FC model, with an upper limit of 93 kg (205 lb)
• The Road FC's middleweight division, with an upper limit of 185 lb (84 kg)

Ambiguity and clarification

For the sake of uniformity, many mixed martial arts websites refer to competitors between 171 and 185 lb (77.5 and 84 kg) as middleweights. This encompasses Shooto's light heavyweight division of the same weight limit.

The middleweight limit, as defined by the Nevada State Athletic Commission^[1] and the Association of Boxing Commissions^[2] is 185 lb (84 kg).

Professional champions

Current champions

Table accurate as of April 2023.

  Active title reign

Organization	Reign Began	Champion	Record	Defenses
UFC	January 20, 2024	Dricus du Plessis	21-2 (9KO 22SUB)	0
Bellator MMA	June 24, 2022	Johnny Eblen	14-0 (6KO 1SUB)	2
ONE Championship	October 30, 2020	Reinier de Ridder	16–1 (3KO 11SUB)	2
Fight Nights Global	September 9, 2020	Vladimir Mineev	16–1–1 (9KO 3SUB)	0
KSW	June 3, 2023	Paweł Pawlak	22–4–1 (11KO 4SUB)	0
Cage Warriors	April 2, 2022	Christian Leroy Duncan	8–0 (6KO 1SUB)	1
ACA	April 9, 2021	Magomedrasul Gasanov	18–2 (5KO 1SUB)	2
Road FC	July 3, 2021	In Su Hwang	6–1 (6KO 0SUB)	0
Legacy Fighting Alliance		Lucas Fernando	9–1 (5KO 2SUB)	0
URCC	January 7, 2017	Chris Hofmann	8–1 (7KO)	1