This is a list of ONE Championship champions in each weight division of each sport.
Current champions
} Vacant == Men's championship history ==
Men's championship history
Heavyweight World Championship ::Weight limit :::— MMA: :::— Kickboxing / Muay Thai: Unlimited Light Heavyweight World Championship ::Weight limit: Middleweight World Championship ::Weight limit: Welterweight World Championship ::Weight limit: Lightweight World Championship ::Weight limit: Featherweight World Championship ::Weight limit: Bantamweight World Championship ::Weight limit: Flyweight World Championship ::Weight limit: Strawweight World Championship ::Weight limit: Atomweight World Championship ::Weight limit: ==Women's championship history==
Women's championship history
Women's Strawweight World Championship ::Weight limit: Women's Atomweight World Championship ::Weight limit: ==Tournament winners==
Records
Most wins in title bouts Most consecutive title defenses Multi-division champions Simultaneous two division champions } }} days 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. ==Missed weight/Failed hydration title fights==
Missed weight/Failed hydration title fights
Throughout the history of ONE Championship, there has been multiple instances of champions or title challengers missing weight, or failing hydration tests. These are the official fights that still happened after the fails. ==See also==