The ONE Championship (formerly known as "ONE Fighting Championship") promotion was started in 2011.
This list is an up-to-date roster of those fighters currently under contract with the ONE Championship brand. Fighters are organized by weight class and within their weight class by their number of fights with the promotion.
Notes
- Results of fighting within development leagues (ONE Warriors series, ONE Hero series & Road to ONE) not counted for ONE Championship Records.
Recent signings
The fighters in this section have either signed with the ONE, have recently returned from an announced retirement, or have yet to make their ONE debut, or have get a contract from ONE Lumpinee (ONE Friday Fights) event.
Current champions, weight classes and status
The ONE currently uses ten different weight classes and four sports combat. This list of champions is updated as of December 6, 2025, after ONE Fight Night 38.
Suspended fighters
The list below is based on fighters suspended either by World Anti-Doping Agency (WADA) for violation of taking prohibited substances or non-analytical incidents, (2) by local commissions on misconduct during the fights or at event venues, or (3) by ONE.
Mixed martial arts
Heavyweight (265 lb, 120.2 kg)
Light Heavyweight (225 lb, 102.1 kg)
Middleweight (205 lb, 93 kg)
Welterweight (185 lb, 83.9 kg)
Lightweight (170 lb, 77.1 kg)
Featherweight (155 lb, 70.3 kg)
Bantamweight (145 lb, 65.8 kg)
Flyweight (135 lb, 61.2 kg)
Strawweight (125 lb, 56.7 kg)
Women's Atomweight (115 lb, 52.2 kg)
Unless otherwise cited, all records are retrieved from tapology.com
.
Kickboxing & Muay Thai
Heavyweight (265 lb, 120.2 kg)
Light Heavyweight (225 lb, 102.1 kg)
Lightweight (170 lb, 77.1 kg)
Featherweight (155 lb, 70.3 kg)
Bantamweight (145 lb, 65.8 kg)
Flyweight (135 lb, 61.2 kg)
Strawweight (125 lb, 56.7 kg)
Atomweight (115 lb, 52.2 kg)
Women's Strawweight (125 lb, 56.7 kg)
Women's Atomweight (115 lb, 52.2 kg)
Submission grappling
Middleweight (205 lb, 93 kg)
Welterweight (185 lb, 83.9 kg)
Lightweight (170 lb, 77.1 kg)
Featherweight (155 lb, 70.3 kg)
Women's Bantamweight (145 lb, 65.8 kg)
Flyweight (135 lb, 61.2 kg)
See also
References
External links