The lightweight division in mixed martial arts contains different weight classes:
The UFC's lightweight division, which groups competitors within 146 to 155 lb (66 to 70 kg)
The Shooto lightweight division, which limits competitors to 145 lb (65.8 kg)
The ONE Championship's lightweight division, with an upper limit at 77.1 kg (170.0 lb)
The Road FC's lightweight division, with an upper limit at 154 lb (70 kg)
Ambiguity and clarification
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For the sake of uniformity, most American mixed martial arts media outlets consider Lightweight competitors to be between 146 and 155 lb (66 and 70 kg). This encompasses The Shooto Welterweight division (154 lb / 70 kg).
The UFC's lightweight division was reinstated at UFC 58 after falling into disuse following UFC 49. Sean Sherk, a former welterweight contender, defeated Kenny Florian at UFC 64, becoming the first UFC lightweight champion since 2002.
The lightweight limit, as defined by the Nevada State Athletic Commission[1] and the Association of Boxing Commissions[2] is 155 lb (70 kg).
Professional champions
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Current champions
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This table last updated in June 2025.
Organization
Reign Began
Champion
Record
Defenses
UFC
June 28, 2025
Ilia Topuria
17-0
0
Bellator MMA
November 18, 2022
Usman Nurmagomedov
19-0 (1)
3
ONE Championship
August 26, 2022
Christian Lee
17-4
0
Rizin FF
June 13, 2021
Roberto de Souza
19-3
4
KSW
June 3, 2023
Salahdine Parnasse
21-2
3
Oktagon MMA
December 29, 2024
Losene Keita
16-1
0
ACA
September 19, 2020
Abdul-Aziz Abdulvakhabov
19-2
1
Cage Warriors
July 22, 2022
George Hardwick
12-1
2
Fight Nights Global
Vacant
Road FC
July 23, 2022
Si Won Park
8-0
1
Titan FC
Vacant
Legacy Fighting Alliance
May 19, 2023
JaCobi Jones
6-1
0
Most wins in lightweight title bouts
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Note: the list includes wins in bouts for lightweight titles of major promotions (UFC, ONE, Strikeforce, WEC, Bellator)
Note: the list includes both undisputed and interim champions
a.^ Edgar's title defense against Gray Maynard at UFC 125 was a split draw. Edgar retained the Lightweight title. The two later rematched at UFC 136, with Edgar defeating Maynard via KO and defending his title.