List of undisputed world boxing champions

Titles have been awarded by: • New York State Athletic Commission (NYSAC), founded in 1920 • World Boxing Association (WBA), founded in 1921 as the National Boxing Association (NBA); renamed to the WBA in 1962 • World Boxing Council (WBC), founded in 1963 • International Boxing Federation (IBF), founded in 1983 • World Boxing Organization (WBO), founded in 1988 == Criteria ==

• 1921–1963, a boxer who held both the NYSAC and NBA (WBA) world titles simultaneously • 1963–1983, a boxer who held both the WBA and WBC world titles simultaneously • 1983–2007, a boxer who held the WBA, WBC, and IBF world titles simultaneously • 2007–present, a boxer who holds the WBA, WBC, IBF and WBO world titles simultaneously ==Heavyweight==

NYSAC–NBA era (1921–1963) WBA–WBC era (1963–1983) WBA–WBC–IBF era (1983–2007) WBA–WBC–IBF–WBO era (2007–present) ==Cruiserweight==

WBA–WBC–IBF era (1983–2007) WBA–WBC–IBF–WBO era (2007–present) ==Light heavyweight==

NYSAC–NBA era (1921–1963) WBA–WBC era (1963–1983) WBA–WBC–IBF era (1983–2007) WBA–WBC–IBF–WBO era (2007–present) ==Super middleweight==

WBA–WBC–IBF–WBO era (2007–present) ==Middleweight==

NYSAC–NBA era (1921–1963) WBA–WBC era (1963–1983) WBA–WBC–IBF era (1983–2007) ==Light middleweight==

WBA–WBC era (1963–1983) WBA–WBC–IBF era (1983–2007) WBA–WBC–IBF–WBO era (2007–present) ==Welterweight==

NYSAC–NBA era (1921–1963) WBA–WBC era (1963–1983) WBA–WBC–IBF era (1983–2007) WBA–WBC–IBF–WBO era (2007–present) ==Light welterweight==

NYSAC–NBA era (1921–1963) WBA–WBC era (1963–1983) WBA–WBC–IBF era (1983–2007) WBA–WBC–IBF–WBO era (2007–present) ==Lightweight==

NYSAC–NBA era (1921–1963) WBA–WBC era (1963–1983) WBA–WBC–IBF era (1983–2007) WBA–WBC–IBF–WBO era (2007–present) ==Super featherweight==

NYSAC–NBA era (1921–1963) WBA–WBC era (1963–1983) ==Featherweight==

NYSAC–NBA era (1922–1963) WBA–WBC era (1963–1983) ==Super bantamweight==

WBA–WBC–IBF–WBO era (2007–present) ==Bantamweight==

NYSAC–NBA era (1921–1963) WBA–WBC era (1963–1983) WBA–WBC–IBF–WBO era (2007–present) ==Super flyweight==

To date, there has never been an undisputed champion in this division. ==Flyweight==

NYSAC–NBA era (1921–1963) WBA–WBC era (1963–1983) ==Light flyweight==

To date, there has never been an undisputed champion in this division. ==Mini flyweight==

To date, there has never been an undisputed champion in this division. ==List of champions in multiple weight classes==

Below is a list of boxers that have held the undisputed championship in at least two different weight classes. As of February 2026, Henry Armstrong and Terence Crawford are the only boxers to have held the claim in three weight classes. ==See also==