Bantamweight
| Name | Reign period | No. of successful defenses |
| Éder Jofre | April 4, 1963 – May 18, 1965 | 2 |
| Masahiko "Fighting" Harada | May 18, 1965 – February 27, 1968 | 4 |
| Lionel Rose | February 27, 1968 – August 22, 1969 | 3 |
| Rubén Olivares | August 22, 1969 – October 16, 1970 | 2 |
| Jesús "Chucho" Castillo | October 16, 1970 – April 2, 1971 | 0 |
| Rubén Olivares | April 2, 1971 – March 19, 1972 | 2 |
| Rafael Herrera | March 19, 1972 – July 29, 1972 | 0 |
| Enrique Pinder | July 29, 1972 – 1973 (stripped) | 0 |
| Rafael Herrera def. Rodolfo Martínez |
April 14, 1973 – December 7, 1974 | 2 |
| Rodolfo Martínez | December 7, 1974 – May 8, 1976 | 3 |
| Carlos Zárate | May 8, 1976 – June 3, 1979 | 9 |
| José Guadalupe Pintor | June 3, 1979 – 1982 (vacated) | 8 |
| Alberto Dávila def. Francisco "Kiko" Bejines |
September 1, 1983 – 1984 (vacated) | 1 |
| Daniel Zaragoza def. Fred Jackson |
May 4, 1985 – August 9, 1985 | 0 |
| Miguel Lora | August 9, 1985 – October 29, 1988 | 7 |
| Raúl Pérez | October 29, 1988 – February 25, 1991 | 7 |
| Greg Richardson | February 25, 1991 – September 19, 1991 | 1 |
| Joichiro Tatsuyoshi | September 19, 1991 – September 17, 1992 | 0 |
| Victor Rabanales | September 17, 1992 – March 28, 1993 | 4 |
| Jung-Il Byun | March 28, 1993 – December 23, 1993 | 1 |
| Yasuei Yakushiji | December 23, 1993 – July 30, 1995 | 4 |
| Wayne McCullough | July 30, 1995 – January, 1997 (vacated) | 2 |
| Sirimongkol Singwangcha (Elevated from Interim status) |
January, 1997 – November 22, 1997 | 3 |
| Joichiro Tatsuyoshi | November 22, 1997 – December 29, 1998 | 2 |
| Veeraphol Sahaprom | December 29, 1998 – April 16, 2005 | 14 |
| Hozumi Hasegawa | April 16, 2005 – April 30, 2010 | 10 |
| Fernando Montiel | April 30, 2010 – February 19, 2011 | 1 |
| Nonito Donaire | February 19, 2011 – October 22, 2011 (vacated) | 1 |
| Shinsuke Yamanaka def. Christian Esquivel |
November 5, 2011 – Present | 1 |
Read more about this topic: List Of WBC World Champions