List of WBO world champions
This is a list of WBO world champions, showing every world champion certified by the World Boxing Organization. The WBO is one of the four major governing bodies in professional boxing, and has awarded world championships in 17 different weight classes since 1989.Heavyweight
This weight class is designated as cruiserweight by the WBA, WBC, and IBF.Light heavyweight
Super middleweight
Middleweight
Junior middleweight
Welterweight
Junior welterweight
Lightweight
Featherweight
Bantamweight
Junior bantamweight
Flyweight
Mini flyweight