The UFC, Bellator and ONE currently recognise male and female world champions in a variety of weight classes. Here is the current title picture across the board.
Note: These lists are updated each Monday after a fight weekend.
UFC (Men)
- Heavyweight: Jon Jones; (Interim): Tom Aspinall
- Light Heavyweight: Alex Pereira
- Middleweight: Dricus du Plessis
- Welterweight: Leon Edwards
- Lightweight: Islam Makachev
- Featherweight: Ilia Topuria
- Bantamweight: Sean O'Malley
- Flyweight: Alexandre Pantoja
UFC (Women)
- Bantamweight: Raquel Pennington
- Flyweight: Alexa Grasso
- Strawweight: Zhang Weili
Bellator (Men)
- Heavyweight: Ryan Bader
- Light Heavyweight: Corey Anderson
- Middleweight: Johnny Eblen
- Welterweight: Jason Jackson
- Lightweight: Usman Nurmagomedov
- Featherweight: Patricio Pitbull
- Bantamweight: Patchy Mix
Bellator (Women)
- Featherweight: Cris Cyborg
- Flyweight: Liz Carmouche
ONE Championship (Men)
- Heavyweight: Anatoly Malykhin
- Light heavyweight: Anatoly Malykhin
- Middleweight: Anatoly Malykhin
- Welterweight: Christian Lee
- Lightweight: Christian Lee
- Featherweight: Tang Kai
- Bantamweight: Fabricio Andrade
- Flyweight: Demetrious Johnson
- Strawweight: Joshua Pacio
ONE Championship (Women)
- Strawweight: Xiong Jing Nan
- Atomweight: Stamp Fairtex