History
English boxing authorities established the flyweight class in 1910, with a weight limit of 108 pounds. The United States recognized the class shortly afterward.
However, there was no world champion in the division until 1913, when British champ Sid Smith beat European titleist Eugene Criqui. The bout that genuinely created the world flyweight championship was Jimmy Wilde's knockout of the Zulu Kid in 1916. Wilde was the British and European champion, while the Zulu Kid was the American champion.
The present weight limit of 112 pounds was reached in 1920, when New York passed the Walker Law legalizing boxing in the state.
The lists below include generally recognized champions, as well as champions of the National Boxing Association/World Boxing Association (NBA/WBA), World Boxing Council (WBC) and International Boxing Federation (IBF).
Some other champions recognized by New York (NY), Great Britain (GBR), Europe and the European Boxing Union (EBU) are also included, if they seemed to be genuine claimants and/or later won recognition from an international body.
Only those bouts are included in which the championship changed hands or the championships of two or more governing bodies was unified.
