List of undisputed world boxing champions

This is a list of undisputed champions in professional boxing.
Championship recognition.
Titles have been awarded by:
Super middleweight.
To date, there have been no undisputed super middleweight champions. The closest the division came to having an undisputed champion was on November 3, 2007, when Joe Calzaghe defeated Mikkel Kessler to unify the WBA (Super), WBC, and WBO titles; the IBF champion at the time was Lucian Bute. Calzaghe was, however, frequently described as the "undisputed champion" by some outlets. Others disputed this, because although he held the WBA, WBC and WBO titles, he had vacated the IBF title in November 2006 for choosing to face Peter Manfredo Jr. as his next opponent instead of mandatory challenger Robert Stieglitz.
Super flyweight.
To date, there have no undisputed at super flyweight champions. Jiro Watanabe came close when he beat Payao Pooltarat for the WBC title. But Watanabe had been stripped of the WBA title before the fight for refusing to fight his number 1 contender Khaosai Galaxy.
Light flyweight/junior flyweight.
To date, there have been no undisputed light flyweight champions. The closest was Michael Carbajal, who held the WBC, IBF, and WBO titles at different points in his career, and held the unified WBC and IBF titles in 1994 before losing them to Humberto González.
Minimumweight/Mini flyweight/Strawweight.
To date, there have been no undisputed mini flyweight champions. The closest was on June 20, 2012, when Kazuto Ioka defeated Akira Yaegashi to unify the WBA and WBC titles. However, Ioka vacated the titles following the fight to move up to light flyweight. 