List of ONE Championship champions

Men's championship history

Heavyweight World Championship

Light Heavyweight World Championship

Middleweight World Championship

Welterweight World Championship

Lightweight World Championship

Featherweight World Championship

Bantamweight World Championship

Flyweight World Championship

Strawweight World Championship

Atomweight World Championship

Women's championship history

Women's Strawweight World Championship

Women's Atomweight World Championship

Tournament winners

Event	Date	Division	Winner	Runner-up
ONE FC: Rise to Power	May 31, 2013	Bantamweight	Records Most wins in title bouts Title wins Champion Weight class W D NC L 11 Most consecutive title defenses Defenses Champion Division Period 7 Multi-division champions No. Champion Division Won Lost Defenses Reign Total Reign 1 Simultaneous two division champions No. Champion Division Span Defenses Simultaneous Reign 1 formatnum: age in days|2017|11|10|show unit=|2018|9|28| Champions by nationality Fighters with multiple title reigns in a specific division are only counted once. Interim champions who never became linear champions are only listed in parentheses. Country MMA Kickboxing Muay Thai Submission Grappling Tournament Total (