The welterweight division in mixed martial arts contains different weight classes:

• The UFC's welterweight division, which groups competitors within 156 to 170 lb (71 to 77 kg)
• The ONE Championship's welterweight division, with upper limit at 83.9 kg (185.0 lb)

Ambiguity and clarification

Many other sports that use the welterweight class, such as boxing, kickboxing, and Muay Thai, define it as below about 147 lb (67 kg). The MMA welterweight class is therefore significantly heavier than the welterweight class of these other sports. For the sake of uniformity, many American mixed martial arts websites refer to competitors between 156 and 170 lb (71 and 77 kg) as welterweights. This encompasses the Shooto middleweight division (167 lb / 76 kg).

The welterweight limit, as defined by the Nevada State Athletic Commission^[1] and the Association of Boxing Commissions^[2] is 170 lb (77kg).

Professional Champions

Current champions

This table is not always up to date. Last updated March 19, 2023.

Organization	Reign began	Champion	Record	Defenses
UFC	August 20, 2022	Leon Edwards	22–3 (7KO 3SUB)	2
Bellator MMA	November 17, 2023	Jason Jackson	17–4 (5KO 3SUB)	0
ONE Championship	November 19, 2022	Christian Lee	17–4 (12KO 4SUB)	0
Fight Nights Global	April 6, 2019	Dmitry Bikrev	12–3 (8KO 1SUB)	2
KSW	April 22, 2023	Adrian Bartosiński	14–0 (11KO 1SUB)	0
Titan FC	March 15, 2019	Michael Graves	9–1 (4KO 2SUB)	1
ACA	February 26, 2021	Abubakar Vagaev	20–3 (4KO 1SUB)	0
Legacy Fighting Alliance	TBA	vacant	TBA	0
Cage Warriors	TBA	vacant	TBA	0

Most wins in Welterweight title bouts

Note: the list includes wins in bouts for welterweight titles of major promotions (UFC, Strikeforce, WEC, Bellator)

Note: the list includes both undisputed and interim champions

  Active title reign

	Name	Promotion	Title bout wins
1.	Georges St-Pierre	UFC	12
2.	Matt Hughes	UFC	9
3.	Pat Miletich	UFC	5
	Ben Askren	Bellator	5
	Nick Diaz	WEC, Strikeforce	5 (1 WEC, 4 Strikeforce)
	Carlos Condit	WEC, UFC	5 (4 WEC, 1 UFC)
	Kamaru Usman	UFC	5
4.	Tyron Woodley	UFC	4(+1a)
5.	Douglas Lima	Bellator	3
	Robbie Lawler	UFC