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 title 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.
Champions
Sid Smith (GBR) 1913Bill Ladbury (GBR) 1913-14
Percy Jones (GBR) 1914
Joe Symonds (GBR) 1914-16
Jimmy Wilde 1916-23
Pancho Villa 1923-25
Fidel Labarba 1925-27
Frenchy Belanger (NBA) 1927-28
Izzy Schwartz (NY) 1927-29
Johnny Mccoy (CA) 1927-28
Newsboy Brown (CA) 1928
Frankie Genaro (NBA, Ibu) 1928-29
Johnny Hill (GBR) 1928-29
Spider Pladner (NBA) 1929
Frankie Genaro (NBA) 1929-31
Willie Lamorte (NY) 1929-30
Midget Wolgast (NY) 1930-35
Young Perez (NBA) 1931-32
Jackie Brown (NBA) 1932-35
Benny Lynch 1935-38
Small Montana (NY CA) 1935-37
Peter Kane 1938-43
Little Dado (NBA, CA) 1938-40
Jackie Paterson 1943-48
Rinty Monaghan 1948-50
Terry Allen 1950
Salvador (Dado) Marino 1950-52
Yoshio Shirai 1953-54
Pascual Perez 1954-60
Pone Kingpetch 1960-62
Masahiko (Fighting) Harada 1962-63
Pone Kingpetch 1963
Hiroyuki Ebihara 1963-64
Pone Kingpetch 1964-65
Salvatore Burrini 1965-66
Horacio Accavallo (WBA) 1966-68
Walter Mcgowan 1966
Chartchai Chionoi 1966-69
Efren Torres 1969-70
Hiroyuki Ebihara (WBA) 1969
Bernabe Villacampo (WBA) 1969-70
Chartchai Chionoi 1970
Berkrerk Chartvanchai (WBA) 1970
Masao Ohba (WBA) 1970-73
Erbito Salavarria 1970-73
Betulio Gonzalez (WBC) 1972
Venice Borkorsor (WBC) 1972-73
Venice Borkorsor 1973
Chartchai Chionoi (WBA) 1973-74
Betulio Gonzalez (WBA) 1973-74
Shoji Oguma (WBC) 1974-75
Susumu Hanagata (WBA) 1974-75
Miguel Canto (WBC) 1975-79
Erbito Salavarria (WBA) 1975-76
Alfonso Lopez (WBA) 1976
Guty Espadas (WBA) 1976-78
Betulio Gonzalez (WBA) 1978-79
Chan-Hee Park (WBC) 1979-80
Luis Ibarra (WBA) 1979-80
Tae-Shik Kim (WBA) 1980
Shoji Oguma (WBC) 1980-81
Peter Mathebula (WBA) 1980-81
Santos Laciar (WBA) 1981
Antonio Avelar (WBC) 1981-82
Luis Ibarra (WBA) 1981
Juan Herrera (WBA) 1981-82
Prudencio Cardona (WBC) 1982
Santos Laciar (WBA) 1982-85
Freddie Castillo (WBC) 1982
Eleoncio Mercedes (WBC) 1982-83
Charlie Magri (WBC) 1983
Frank Cedeno (WBC) 1983-84
Soon-Chun Kwon (IBF) 1983-85
Koji Kobayashi (WBC) 1984
Gabriel Bernal (WBC) 1984
Sot Chitalada (WBC) 1984-88
Hilario Zapate (WBA) 1985-87
Chong-Kwan Chung (IBF) 1985-86
Bi-Won Chung (IBF) 1986
Hi-Sup Shin (IBF) 1986-87
Dodie Penalosa (IBF) 1987
Fidel Bassa (WBA) 1987-89
Choi Chang-Ho (IBF) 1987-88
Rolando Bohol (IBF) 1988
Yong-Kang Kim (WBC) 1988-89
Duke Mckenzie (IBF) 1988-89
Dave Mcauley (IBF) 1989-92
Sot Chitalada (WBC) 1989-91
Jesus Rojas (WBA) 1989-90
Yul-Woo Lee (WBA) 1990
Leopard Tamakuma (WBA) 1990-91
Muangchai Kittikasem (WBC) 1991-92
Yong-Kang Kim (WBA) 1991-92
Rodolfo Blanco (IBF) 1992
Yuri Arbachakov (WBC) 1992-97
Aquiles Guzman (WBA) 1992
Phichit Sithbangprachan (IBF) 1992-94
David Griman (WBA) 1992-94
Saen Sor Ploenchit (WBA) 1994-96
Francisco Tejedor (IBF) 1995
Danny Romero (IBF) 1995-96
Mark Johnson (IBF) 1996-99
Jose Bonilla (WBA) 1996-97
Chatchai Sasakul (WBC) 1997-98
Hugo Soto (WBA) 1998-99
Manny Pacquiao (WBC) 1998-99
Irene Pacheco (IBF) 1999-
Leo Gamez (WBA) 1999
Medgoen Lukchaopormasak (WBC) 1999-2000
Sornpichai Kratindaenggym (WBA) 1999-2000
Eric Morel (WBA) 2000-03
Malcolm Tunacao (WBC) 2000-01
Pongsaklek Wonjongkam (WBC) 2001-
Lorenzo Parra (WBA) 2003-