Flyweight World/Lineal Champions (112lbs)

Jimmy Wilde (24/4/1916 – 18/6/1923)

Wilde became the first universally recognised champion at the weight on beating Johnny Rosner
Pancho Villa (18/6/1923 – 14/7/1925)
Villa died 
Fidel LaBarba (21/1/1927 – 25/8/1927)

LaBarba was universally recognised on beating Elky Clark
LaBarba moved up in weight 
Emile Pladner (20/3/1929 – 18/4/1929)

Pladner should be seen as the IBU/NBA champion from this date 
Frankie Genaro (18/4/1929 – 26/10/1931)
Young Perez (26/10/1931 – 31/10/1932)
Jackie Brown (31/10/1932 – 9/9/1935
Benny Lynch (9/9/1935 – 29/6/1938)

Lynch moved up in weight
Peter Kane (22/9/1938 – 8/5/1939)

Kane (2) beat Jackie Jurich (1). Kane had been inadvertently left out of The Ring ratings
Kane moved up in weight
Jackie Paterson (19/6/1943 – 23/3/1948)

Paterson (1) beat Peter Kane (2)
Rinty Monaghan (23/3/1948 – 23/3/1950)
Monaghan retired
Terry Allen (25/4/1950 – 1/8/1950)

Allen (2) beat Honore Pratesi (1)
Dado Marino (1/8/1950 – 19/5/1952)
Yoshio Shirai (19/5/1952 – 26/11/1954)
Pascual Perez (26/11/1954 – 16/4/1960)
Pone Kingpetch (16/4/1960 – 10/10/1962)
Fighting Harada (10/10/1962 – 12/1/1963)
Pone Kingpetch (12/1/1963 – 18/9/1963)
Hiroyuki Ebihara (18/9/1963 – 23/1/1964)
Pone Kingpetch (23/1/1964 – 23/4/1965)
Salvatore Burruni (23/4/1965 – 14/6/1966)
Walter McGowan (14/6/1966 – 30/12/1966)
Chartchai Chionoi (30/12/1966 – 23/2/1969) 
Efren Torres (23/2/1969 – 20/3/1970)
Chartchai Chionoi (20/3/1970 – 7/12/1970)
Erbito Salavarria (7/12/1970 – 9/2/1973)
Venice Borkhorsor (9/2/1973 – 10/7/1973)

Borkhorsor moved up in weight
Miguel Canto (8/1/1975 – 18/3/1979)

Canto (1) beat Oguma (2)
Chan-He Park (18/3/1979 – 18/5/1980)
Shoji Oguma (18/5/1980 – 12/5/1981)
Jose Antonio Avelar (12/5/1981 – 20/3/1982)
Prudencio Cardona (20/3/1982 – 24/7/1982)
Freddy Castillo (24/7/1982 – 6/11/1982)
Eleoncio Mercedes (6/11/1982 – 15/3/1983)
Charlie Magri (15/3/1983 – 27/9/1983)
Frank Cedeno (27/9/1983 – 18/1/1984)
Koji Kobayashi (18/1/1984 – 9/4/1984)
Gabriel Bernal (9/4/1984 – 8/10/1984)
Sot Chitalada (8/10/1984 – 24/7/1988)
Yong-Kang Kim (24/7/1988 – 3/6/1989)
Sot Chitalada (3/6/1989 – 15/2/1991)
Muangchai Kittikasem (15/2/1991 – 23/6/1992)
Yuri Arbachakov (23/6/1992 – 12/11/1997)
Chatchai Sasakul (12/11/1997 – 4/12/1998)
Manny Pacquiao (4/12/1998 – 17/9/1999)
Medgoen Singsurat (17/9/1999 – 19/5/2000)
Malcolm Tunacao (19/5/2000 – 2/3/2001)
Pongsaklek Wonjongkam (2/3/2001 – 18/7/2007)
Daisuke Naito (18/7/2007 – 29/11/2009)
Koki Kameda (29/11/2009 – 27/3/2010)
Pongsaklek Wonjongkam (27/3/2010 – 2/3/2012)
Sonny Boy Jaro (2/3/2012 – 16/7/2012)
Toshiyuki Igarashi (16/7/2012 – 8/4/2013)
Akira Yaegashi (8/4/2013 – 5/9/2014)
Roman Gonzalez (5/9/2014 – 29/9/2016)

Gonzalez moved up in weight

Donnie Nietes (24/2/2018 – 5/4/2018)

Nietes moved up in weight