According to ONE FC’s website listing all of their champions, there are 30 world championships under the ONE FC promotion. This ranges from atomweight for women all the way to heavyweight for men. Not only that, ONE FC also offers Muay-Thai and Grappling world championships as well. It truly is the most diverse martial arts promotion. First, I will list the MMA world champions, followed by Muay-Thai and then Grappling.
Weight Classes
- Heavyweight: 225lb – 265lb; 102kg – 120kg
- Light Heavyweight: 205lb – 225lb; 93kg – 102kg
- Middleweight: 185lb – 205lb; 84kg – 93kg
- Welterweight: 170lb – 185lb; 77kg – 84kg
- Lightweight: 155lb – 170lb; 70kg – 77kg
- Featherweight: 145lb – 155lb; 66kg – 70kg
- Bantamweight: 135lb – 145lb; 61kg – 66kg
- Flyweight: 125lb – 135lb; 57kg – 61kg
- Strawweight: 115lb – 125lb; 52kg – 57kg
- Atomweight: 105lb – 115lb; 48kg – 52kg
ONE FC MMA World Champions
As of April 17th, 2025.
- Heavyweight: “Reug Reug” Oumar Kane
- Light Heavyweight: Anatoly “Sladkiy” Malykhin
- Middleweight: Anatoly “Sladkiy” Malykhin
- Welterweight: Christian “The Warrior” Lee
- Lightweight: Christian “The Warrior” Lee
- Featherweight: Tang Kai
- Bantamweight: Fabricio “Wonder Boy” Andrade
- Flyweight: Yuya “Little Piranha” Wakamatsu
- (Men) Strawweight: Joshua “The Passion” Pacio
- (Women) Strawweight: “The Panda” Xiong Jing Nan
- Atomweight: Stamp Fairtex
- Interim Atomweight Champion: Denice “The Menace” Zamboanga
ONE FC Muay-Thai/Kickboxing World Champions
As of April 17th, 2025.
- Heavyweight Muay-Thai: Roman Kryklia
- Light Heavyweight Kickboxing: Roman Kryklia
- Lightweight: Regian “The Immortal” Eersel
- Featherweight Muay-Thai: Tawanchai PK Saenchai
- Featherweight Kickboxing: Superbon
- Interim Featherweight Kickboxing: Masaaki Noiri
- Bantamweight Kickboxing: Jonathan “The General” Haggerty
- Interim Featherweight Muay-Thai: Nabil Anane
- Flyweight Kickboxing: “The Kicking Machine” Superlek Kiatmuu9
- (Men) Strawweight Muay-Thai & Kickboxing: Prajanchai PK Saenchai
- Interim (Men) Strawweight Kickboxing: Jonathan Di Bella
- ((Women) Strawweight Kickboxing: Jackie Buntan
- Atomweight Muay-Thai: Allycia Hellen Rodrigues
- Atomweight Kickboxing: “The Queen” Phetjeeja Lukjaoporongtom
ONE FC Submission Grappling World Champions
As of April 17th, 2025.
- Welterweight Submission Grappling: Tye Ruotolo
- Lightweight Submission Grappling: Kade Ruotolo
- Atomweight Submission Grappling: Mayssa Bastos