Michael Carbajal is an American five-time world boxing champion of Mexican descent. His nickname was "Little Hands Of Stone," after his favorite boxer,"Hands Of Stone" Roberto Durán.
Jorge Armando Arce Armenta, best known as Jorge Arce, is a Mexican former professional boxer who competed from 1996 to 2014. He is a multiple-time world champion, and the second boxer from Mexico to win world titles in four weight divisions. In a storied career, Arce held the WBO light flyweight title from 1998 to 1999; the WBC and lineal light flyweight titles from 2002 to 2004; the WBO super flyweight title in 2010; the WBO junior featherweight title in 2011; and the WBO bantamweight title from 2011 to 2012. Additionally he held the WBC interim flyweight title from 2005 to 2006, the WBA interim super flyweight title from 2008 to 2009, and challenged once for the WBC featherweight title in his final fight in 2014.
Ricardo López Nava is a Mexican former professional boxer who competed from 1985 to 2001. He was a two-weight world champion, having held the WBC mini flyweight title from 1990 to 1998, defending it against a record-breaking 21 opponents; the WBA and WBO mini flyweight titles between 1997 and 1998; and the IBF junior flyweight title from 1999 until his retirement in 2001. He is one of just fifteen world boxing champions to retire without a loss. He is the father of undefeated former boxer Alonso López.
Vakhtang "Vic" Darchinyan is an Armenian professional boxer. He is a former world champion in two weight classes, having held the IBF flyweight title from 2004 to 2007; and the WBA (Undisputed) and WBA (Unified), WBC, IBF, and lineal super-flyweight titles between 2008 and 2010. Additionally, he has held a record four IBO titles at flyweight, super-flyweight, and twice at bantamweight between 2005 and 2011. A southpaw boxer with a highly unique fighting style and formidable punching power, Darchinyan became the first Armenian to win a world title in 2004.
Fernando Montiel Martínez is a Mexican professional boxer. He is a multiple-time former world champion in three weight classes, having held the WBO flyweight title from 2001 to 2002, the WBO junior bantamweight title twice between 2002 and 2008, and the unified WBC and WBO bantamweight titles from 2010 to 2011.
Johnny Bredahl Johansen, known professionally as Johnny Bredahl or Johny Wahid Johansen, is a retired professional boxer in the bantamweight division. Bredahl is the former WBA world bantamweight champion. Bredahl fought at the bantamweight division but did also compete at divisions either side.
Robbie Regan is a Welsh former professional boxer who competed from 1989 to 1996. He held the WBO bantamweight title in 1996, the IBF interim flyweight title in 1995, and once challenged for the WBO flyweight title in 1995. At regional level, he held the British flyweight title twice between 1991 and 1992, and the EBU European flyweight title twice between 1992 and 1994.
Nonito Gonzales Donaire Jr. is a Filipino professional boxer. He has held multiple world championships in four weight classes from flyweight to featherweight, including the WBC bantamweight title since May 2021. In addition to being the oldest boxer in history to become a bantamweight world champion, Donaire holds the distinction of being the first three-time champion in that weight class. He has also held world championships across three consecutive decades: the 2000s, 2010s and 2020s, being the sixth boxer to do so after Evander Holyfield, Manny Pacquiao, Bernard Hopkins, Érik Morales, and Floyd Mayweather Jr.
The Oriental and Pacific Boxing Federation (OPBF) is a professional boxing organization that sanctions title fights in the Asian and Pacific region.
Gerónimo "Gerry" Peñalosa is a Filipino former professional boxer who competed from 1989 to 2010. He is a two-weight world champion, having held the WBC and lineal super flyweight titles from 1997 to 1998, and the WBO bantamweight title from 2007 to 2009. Originally from San Carlos City, Peñalosa currently resides in Manila. He was trained mainly by Freddie Roach, and went on to become a boxing trainer himself after retirement. Peñalosa's older brother, Dodie Boy Peñalosa, is also a former boxer and world champion.
Donnie Liboon Nietes is a Filipino professional boxer. He is a world champion in four weight-classes, having previously held the WBO mini-flyweight title from 2007 to 2011; the WBO and The Ring magazine junior-flyweight titles between 2011 and 2016; IBF flyweight title from 2017 to 2018; and the WBO junior-bantamweight title from 2018 to 2019. He is the longest-reigning Filipino boxing world champion, surpassing in 2014 the record set in 1967 by Boxing Hall of Fame inductee Gabriel "Flash" Elorde. He was one of the first three Asian fighters with world titles in at least four weight classes alongside fellow Filipinos Manny Pacquiao and Nonito Donaire.
Patrick "Pat" Clinton is a Scottish former professional boxer who competed from 1985 to 1994. He held the WBO flyweight title from 1992 to 1993. At regional level, he held the British flyweight title from 1988 to 1999, and the EBU European title in 1990.
Paul Weir is a Scottish professional boxer and a former WBO minimumweight champion. Weir is undefeated WBO Minimum Weight Champion and former WBO Light Flyweight Champion.
José Ángel "Carita" López Rivera is a Puerto Rican former professional boxer who has competed in the flyweight and super flyweight divisions. His first professional championship was the Puerto Rican flyweight title, which won by defeating José Luis De Jesús. López's first championship opportunity was against Alberto Jiménez for the World Boxing Organization's flyweight title, in a contest that he lost by unanimous decision. This was followed by three more world championships fights, two of them for major titles. However, López lost these contests by unanimous decision. On June 23, 2001, López won the WBO Latino super flyweight title. After losing to Fernando Montiel in his fifth world title opportunity, he recurred to fight for regional championships. From 2001 to 2008, López compiled an undefeated record consisting of 14 wins and a single draw. On March 28, 2009, López defeated Pramuansak Phosuwan to win the WBO's super flyweight world championship.
John Riel Casimero is a Filipino professional boxer. He is a three-weight world champion, having held the WBO bantamweight title since 2019, and previously the IBF junior-flyweight title from 2012 to 2013 and the IBF flyweight title in 2016. He also held the WBO interim junior-flyweight title from 2009 to 2010 and the WBO interim bantamweight title in 2019. Quadro Alas is Tagalog for four of a kind when translated, his moniker means Four Aces.
Kosei Tanaka is a Japanese professional boxer. He is a three-weight world champion, having held the WBO mini-flyweight title from 2015 to 2016; the WBO junior-flyweight title from 2016 to 2017; and the WBO flyweight title from 2018 to 2020. Upon winning his first world title in only his fifth bout, he became the fastest Japanese fighter ever to become a world champion. Along with Vasyl Lomachenko, he is also the fastest ever fighter to win titles in three weight-classes, having accomplished the feat in only 12 bouts.
Arthur Villanueva is a Filipino professional boxer. He is currently under the Bantamweight division.
Joseph Kelly is a Scottish former boxer who won the ABA title and the Commonwealth Games silver medal at flyweight in 1982, and after turning professional was British bantamweight champion in 1992.
Sho Kimura is a Japanese professional boxer who held the WBO flyweight title from 2017 to 2018.
Wilfredo Méndez is a Puerto Rican professional boxer who has held the WBO mini flyweight title since 2019.
Mercurio Ciaramitaro
Alexander Makhmutov
Jorge Arce 
Bela Sandor
Gheorghe Ghiompirica
Carlos Gabriel Salazar 
Gabriel Pedro Silva Guerra
Jesper Jensen
Julian Gomez
Robbie Regan 
John Vasquez
Carmelo Fernandez
Julio Osorio
Fethi Touati
Cecilio Ramirez