This is a list of WBO world champions, showing every world champion certified by the World Boxing Organization (WBO). The WBO is one of the four major governing bodies in professional boxing, and has awarded world championships in 17 different weight classes since 1989.

Boxers who won the title but were stripped due to the title bout being overturned to a no contest are not listed.

Current champion
Most consecutive title defenses

Heavyweight

No. Name Date Defenses
1 Francesco Damiani
(def. Johnny du Plooy) 		6 May 1989 1
2 Ray Mercer 11 January 1991 – 28 December 1991 1
Mercer was stripped of the title in December 1991 for signing for a bout against Larry Holmes instead of mandatory challenger Michael Moorer.[1]
3 Michael Moorer
(def. Bert Cooper) 		15 May 1992 – 8 February 1993 0
Moorer vacated the title so that he could be ranked by other sanctioning bodies.[2]
4 Tommy Morrison
(def. George Foreman) 		7 June 1993 1
5 Michael Bentt 29 October 1993 0
6 Herbie Hide 19 March 1994 0
7 Riddick Bowe 11 March 1995 – 5 May 1996 1
Bowe was stripped of the title when he rejected Don King's purse offer.[3]
8 Henry Akinwande
(def. Jeremy Williams) 		29 June 1996 – 29 January 1997 2
Akinwande vacated the title at the request of the WBC to become the mandatory challenger of the upcoming fight between Lennox Lewis and Oliver McCall for the vacant belt.[4]
9 Herbie Hide (2)
(def. Tony Tucker) 		28 June 1997 2
10 Vitali Klitschko 26 June 1999 2
11 Chris Byrd 1 April 2000 0
12 Wladimir Klitschko 14 October 2000 5
13 Corrie Sanders 8 March 2003 – 7 October 2003 0
Sanders vacated the title to sign with Don King.[5]
14 Lamon Brewster
(def. Wladimir Klitschko) 		10 April 2004 3
15 Siarhei Liakhovich 1 April 2006 0
16 Shannon Briggs 4 November 2006 0
17 Sultan Ibragimov 2 June 2007 1
18 Wladimir Klitschko (2) 23 February 2008 14
19 Tyson Fury 28 November 2015 – 12 October 2016 0
Fury, who had previously withdrawn from a rematch against Wladimir Klitschko before testing positive in a Voluntary Anti-Doping Association (VADA) test for cocaine on 29 September, vacated the title on 12 October 2016 after testing positive a second time, citing his need to focus on treatment for depression.[6]
20 Joseph Parker
(def. Andy Ruiz Jr.) 		10 December 2016 2
21 Anthony Joshua 31 March 2018 1
22 Andy Ruiz Jr. 1 June 2019 0
23 Anthony Joshua (2) 7 December 2019 1
24 Oleksandr Usyk 25 September 2021 – present 1

Junior heavyweight

This weight class is designated as cruiserweight by the WBA, WBC, and IBF.

No. Name Date Defenses
1 Boone Pultz
(def. Magne Havnå) 		3 December 1989 0
2 Magne Havnå 17 May 1990 – 15 February 1991 2
Havnå vacates the title.
3 Tyrone Booze
(def. Derek Angol) 		25 July 1992 1
4 Markus Bott 13 February 1993 0
5 Nestor Hipolito Giovannini 26 June 1993 1
6 Dariusz Michalczewski 17 December 1994 – March 1995 0
Michalczewski vacated the title in favor of the WBO light heavyweight title, which he already held.
7 Ralf Rocchigiani
(def. Carl Thompson) 		10 June 1995 6
8 Carl Thompson 4 October 1997 2
9 Johnny Nelson 27 March 1999 – 22 September 2006 13
Nelson retired after suffering a back injury during training camp for his bout against Enzo Maccarinelli.[7]
10 Enzo Maccarinelli
(interim champion promoted) 		22 September 2006 4
11 David Haye 8 March 2008 – 14 July 2008 0
Haye vacates the title to move up to heavyweight.[8]
12 Victor Emilio Ramírez
(interim champion promoted) 		February 2009 1
13 Marco Huck 5 December 2009 13
14 Krzysztof Głowacki 14 August 2015 1
15 Oleksandr Usyk 17 September 2016 – 5 June 2019 6
Usyk vacated the title to move up to heavyweight.[9]
16 Krzysztof Głowacki (2)
(interim champion promoted) 		5 June 2019 0
17 Mairis Briedis 15 June 2019 – 25 November 2019 0
Briedis stripped of title for not agreeing on an immediate rematch with Głowacki.[10]
18 Lawrence Okolie
(def. Krzysztof Głowacki) 		20 March 2021 – present 3

Light heavyweight

No. Name Date Defenses
1 Michael Moorer
(def. Ramzi Hassan) 		3 December 1988 – 1991 9
Moorer vacated the title to move up to heavyweight.
2 Leeonzer Barber
(def. Tom Collins) 		9 May 1991 4
3 Dariusz Michalczewski 10 September 1994 23
4 Julio César González 10 October 2003 0
5 Zsolt Erdei 17 January 2004 – 13 November 2009 11
Erdei vacated the title to move up to cruiserweight.[11]
6 Jürgen Brähmer
(interim champion promoted) 		13 November 2009 – 19 May 2011 2
Brähmer was stripped of the title after withdrawing from a bout against Nathan Cleverly, citing an eye injury.[12]
7 Nathan Cleverly
(interim champion promoted) 		19 May 2011 5
8 Sergey Kovalev 18 August 2013 8
9 Andre Ward 19 November 2016 – 21 September 2017 1
Ward retires.[13]
10 Sergey Kovalev (2)
(def. Vyacheslav Shabranskyy) 		25 November 2017 1
11 Eleider Álvarez 4 August 2018 0
12 Sergey Kovalev (3) 2 February 2019 1
13 Canelo Álvarez 2 November 2019 – 17 December 2019 0
Álvarez vacated the title to move down to super middleweight.[14]
14 Joe Smith Jr.
(def. Maxim Vlasov) 		10 April 2021 1
15 Artur Beterbiev 18 June 2022 – present 1

Super middleweight

No. Name Date Defenses
1 Thomas Hearns
(def. James Kinchen) 		4 November 1988 – 20 May 1991 2
Hearns's title was vacated on WBO's April 1991 ratings posted on 8 May.[15] He later moved up to light heavyweight.
2 Chris Eubank
(def. Michael Watson) 		21 September 1991 14
3 Steve Collins 18 March 1995 – 2 October 1997 7
Collins was stripped of the title in October 1997 after suffering a leg injury during training camp and subsequently withdrawing from his bout against Joe Calzaghe.[16]
4 Joe Calzaghe
(def. Chris Eubank) 		11 October 1997 – 26 September 2008 21
Calzaghe, citing difficulty making weight, vacated the title after moving up to light heavyweight.[17]
5 Denis Inkin
(def. Fulgencio Zuniga) 		27 September 2008 0
6 Károly Balzsay 10 January 2009 1
7 Robert Stieglitz 22 August 2009 6
8 Arthur Abraham 25 August 2012 1
9 Robert Stieglitz (2) 23 March 2013 2
10 Arthur Abraham (2) 1 March 2014 5
11 Gilberto Ramírez 9 April 2016 – 13 May 2019 5
Ramírez vacates the title to move up to light heavyweight.[18]
12 Billy Joe Saunders
(def. Shefat Isufi) 		18 May 2019 2
13 Canelo Álvarez 8 May 2021 – present 2

Middleweight

No. Name Date Defenses
1 Doug DeWitt
(def. Robbie Sims) 		18 April 1989 1
2 Nigel Benn 29 April 1990 1
3 Chris Eubank 18 November 1990 – 17 July 1991 3
Eubank was expected to move up to super middleweight,[19] the title was then reportedly vacated 1 day after.[20]
4 Gerald McClellan
(def. John Mugabi) 		20 November 1991 – 2 April 1993 0
McClellan vacated the title to move up to super middleweight.[21]
5 Chris Pyatt
(def. Sumbu Kalambay) 		19 May 1993 2
6 Steve Collins 11 May 1994 – 22 April 1995 0
Collins vacated the title to stay super middleweight.[22]
7 Lonnie Bradley
(def. David Mendez) 		19 May 1995 – 7 November 1997 6
Rhodes and Grant was supposedly going to fight for the interim title because of Bradley's injury,[23] but was later changed to the vacant title.[24]
8 Otis Grant
(def. Ryan Rhodes) 		13 December 1997 – 14 November 1998 1
Grant vacated the title to move up to light heavyweight and challenge Roy Jones Jr.[25]
9 Bert Schenk
(def. Freeman Barr) 		30 January 1999 – 14 July 1999 1
Schenk vacated the title due to acute lumbago.[26]
10 Jason Matthews
(def. Ryan Rhodes) 		17 July 1999 0
11 Armand Krajnc 27 November 1999 3
Krajnc vacated the title on 4 June 2001, while in a dispute with Universum Box-Promotion. However the WBO unanimously voted on 17 September 2001 that Krajnc had remained WBO champion throughout the dispute.
12 Harry Simon 6 April 2002 – 8 July 2003 0
Simon was involved in a car accident[27] and was sidelined for 8 months resulting in being stripped of the title.[28]
13 Héctor Velazco
(interim champion promoted) 		8 July 2003 0
14 Felix Sturm 13 September 2003 1
15 Oscar De La Hoya 5 June 2004 0
16 Bernard Hopkins 18 September 2004 1
17 Jermain Taylor 16 July 2005 3
18 Kelly Pavlik 29 September 2007 3
19 Sergio Martínez 17 April 2010 – 29 May 2010 0
Martínez, who held the WBC junior middleweight title at that time, was stripped of the WBO middleweight title because he missed the WBO's deadline to decide on which weight class he would continue to fight in.[29]
20 Dmitry Pirog
(def. Daniel Jacobs) 		31 July 2010 – 25 August 2012 3
Pirog is stripped of title for choosing to fight Gennady Golovkin instead of mandatory challenger Hassan N'Dam N'Jikam.[30]
21 Hassan N'Dam N'Jikam
(interim champion promoted) 		25 August 2012 0
22 Peter Quillin 20 October 2012 – 4 September 2014 3
Quillin vacated the title after pulling out of his scheduled bout against mandatory challenger Matt Korobov.[31]
23 Andy Lee
(def. Matt Korobov) 		13 December 2014 1
24 Billy Joe Saunders 19 December 2015 – 11 October 2018 3
Saunders tested positive for the banned stimulant oxilofrine before his bout against mandatory challenger Demetrius Andrade and vacated the title citing his lack of time to appeal.[32]
25 Demetrius Andrade
(def. Walter Kautondokwa) 		20 October 2018 – 26 August 2022 5
Andrade vacated the title to move up to super middleweight.[33]
26 Janibek Alimkhanuly
(interim champion promoted) 		26 August 2022 – present 1

Junior middleweight

No. Name Date Defenses
1 John David Jackson
(def. Lupe Aquino) 		8 December 1988 – 17 February 1990 1
The title was vacated after an incorrect NC call in his bout against Martin Camara.[34]
2 John David Jackson (2)
(def. Chris Pyatt) 		23 October 1990 – 5 August 1993 3
Jackson vacated the title to move up to middleweight.[35]
3 Verno Phillips
(def. Lupe Aquino) 		30 October 1993 4
4 Paul Jones 22 November 1995 – 26 February 1996 0
Jones was stripped of the title after withdrawing from a bout against no. 1 contender Bronco McKart.[36]
5 Bronco McKart
(def. Santos Cardona) 		1 March 1996 0
6 Winky Wright 17 May 1996 3
7 Harry Simon 22 August 1998 – 27 November 2001 4
Simon vacated the title to move up to middleweight.[37]
8 Daniel Santos
(def. Yori Boy Campas) 		16 March 2002 4
9 Sergiy Dzindziruk 3 December 2005 – 5 October 2011 6
Dzindziruk was stripped of the title due to inactivity caused by injuries.[38]
10 Zaurbek Baysangurov
(interim champion promoted) 		5 October 2011 – 22 July 2013 2
Baysangurov was stripped of the title in July 2013 after withdrawing from a bout against mandatory challenger Demetrius Andrade.[39]
11 Demetrius Andrade
(def. Vanes Martirosyan) 		9 November 2013 – 31 July 2015 1
Andrade was stripped of the title due to inactivity.[40]
12 Liam Smith
(def. John Thompson) 		10 October 2015 2
13 Canelo Álvarez 17 September 2016 – 21 May 2017 0
Álvarez intends to stay at middleweight. The title is vacated on WBO's May 2017 rankings.[41]
14 Miguel Cotto
(def. Yoshihiro Kamegai) 		26 August 2017 0
15 Sadam Ali 2 December 2017 0
16 Jaime Munguia 12 May 2018 – 23 November 2019 5
Munguia vacated the title to move up to middleweight.[42]
17 Patrick Teixeira
(interim champion promoted) 		4 December 2019 0
18 Brian Castaño 13 February 2021 1
19 Jermell Charlo 14 May 2022 – present 0

Welterweight

No. Name Date Defenses
1 Genaro Léon
(def. Danny Garcia) 		6 May 1989 – 28 November 1989 0
Léon's title was vacated on WBO's November 1989 ratings posted on 28 November.[43]
2 Manning Galloway
(def. Al Hamza) 		15 December 1989 7
3 Gert Bo Jacobsen 12 February 1993 – 13 October 1993 0
Jacobsen was stripped of the title after withdrawing from a bout against Eamonn Loughran due to suffering from the flu.[44]
4 Eamonn Loughran
(def. Lorenzo Smith) 		16 October 1993 5
5 José Luis López 13 April 1996 – 21 November 1996 1
López was stripped of the title after testing positive for marijuana.[45]
6 Mihai Leu
(def. Santiago Samaniego) 		22 February 1997 – 1997 1
Leu retires.
7 Akhmed Kotiev
(def. Leonard Townsend) 		14 February 1998 4
8 Daniel Santos 6 May 2000 – 5 December 2001 2
Santos vacated the title to move up to junior middleweight.[46]
9 Antonio Margarito
(def. Antonio Díaz) 		16 March 2002 7
10 Paul Williams 14 July 2007 0
11 Carlos Quintana 9 February 2008 0
12 Paul Williams (2) 7 June 2008 – 14 November 2008 0
Williams vacated the title to move up in weight and fight for the vacant WBO interim junior middleweight title.[47]
13 Miguel Cotto
(def. Michael Jennings) 		21 February 2009 1
14 Manny Pacquiao 14 November 2009 3
15 Timothy Bradley 9 June 2012 2
16 Manny Pacquiao (2) 12 April 2014 1
17 Floyd Mayweather Jr. 2 May 2015 – 6 July 2015 0
Mayweather is stripped of the title for missing the deadline to pay the WBO's sanctioning fee from his 2 May bout against Manny Pacquiao and for continuing to hold world championship titles in multiple weight classes, a violation of the WBO's rules and regulations.[48]
18 Timothy Bradley (2)
(interim champion promoted) 		6 July 2015 – 9 February 2016 1
Bradley vacated the title after he chose to fight Manny Pacquiao instead of mandatory challenger Sadam Ali.[49]
19 Jessie Vargas
(def. Sadam Ali) 		5 March 2016 0
20 Manny Pacquiao (3) 5 November 2016 0
21 Jeff Horn 2 July 2017 1
22 Terence Crawford 9 June 2018 – present 6

Junior welterweight

No. Name Date Defenses
1 Héctor Camacho
(def. Ray Mancini) 		6 March 1989 2
2 Greg Haugen 23 February 1991 0
3 Héctor Camacho (2) 18 May 1991 – 15 May 1992 0
Camacho vacated the title to challenge the WBC champion Julio Cesar Chavez.[50]
4 Carlos González
(def. Jimmy Paul) 		29 June 1992 3
5 Zack Padilla 7 June 1993 – 1 January 1995 4
Padilla was experiencing continuous severe headaches and was found to have a small blood clot near his brain.[51] The title was vacated.[52]
6 Sammy Fuentes
(def. Fidel Avendano) 		20 February 1995 1
7 Giovanni Parisi 9 March 1996 5
8 Carlos González (2) 29 May 1998 0
9 Randall Bailey 15 May 1999 2
10 Ener Julio 22 July 2000 – 25 June 2001 0
Julio vacated the title when a routine eye exam reveals that he has cataracts.[53]
11 DeMarcus Corley
(def. Felix Flores) 		30 June 2001 2
12 Zab Judah 12 July 2003 – 18 June 2004 1
Judah vacated the title to move up to the welterweight division.[54]
13 Miguel Cotto
(def. Kelson Pinto) 		11 September 2004 – 27 October 2006 6
Cotto vacated the title to move up to welterweight.[55]
14 Ricardo Torres
(def. Mike Arnaoutis) 		18 November 2006 3
15 Kendall Holt 5 July 2008 1
16 Timothy Bradley 4 April 2009 – 27 June 2012 3
Bradley vacated the title after moving up to welterweight.[56]
17 Juan Manuel Márquez
(interim champion promoted) 		27 June 2012 – 12 October 2013 0
The WBO decided that Márquez would be allowed to enter as a champion in his fight against Timothy Bradley, but the title would be immediately declared vacated following the fight.[57]
18 Mike Alvarado
(interim champion promoted) 		12 October 2013 0
19 Ruslan Provodnikov 19 October 2013 0
20 Chris Algieri 14 June 2014 – 2 November 2014 0
Algieri vacated the title due to moving up and challenging WBO welterweight champion Manny Pacquiao.[58]
21 Terence Crawford
(def. Thomas Dulorme) 		18 April 2015 – 26 October 2017 6
Crawford vacated the title to move up to welterweight.[59]
22 Maurice Hooker
(def. Terry Flanagan) 		9 June 2018 2
23 José Ramírez 28 July 2019 1
24 Josh Taylor 22 May 2021 – present 1

Lightweight

No. Name Date Defenses
1 Mauricio Aceves
(def. Amancio Castro) 		6 May 1989 1
2 Dingaan Thobela 22 September 1990 – 14 June 1992 2
Thobela's title was vacated after failing to find an opponent by 14 June; the deadline set by the WBO.[60]
3 Giovanni Parisi
(def. Javier Altamirano) 		25 September 1992 – 23 January 1994 2
Parisi vacates the title to move up to junior welterweight.[61]
4 Oscar De La Hoya
(def. Jorge Páez) 		29 July 1994 – 9 February 1996 6
De La Hoya vacates the title to move up to junior welterweight.[62]
5 Artur Grigorian
(def. Antonio Rivera) 		13 April 1996 17
6 Acelino Freitas 3 January 2004 0
7 Diego Corrales 7 August 2004 – 14 January 2006 1
Corrales was stripped of the title after deciding to pursue a rematch with José Luis Castillo instead of his mandatory challenger Acelino Freitas.[63]
8 Acelino Freitas (2)
(def. Zahir Raheem) 		29 April 2006 0
9 Juan Díaz 28 April 2007 1
10 Nate Campbell 8 March 2008 – 13 February 2009 0
Campbell was stripped of his unified IBF/WBO world titles after failing to make weight the day before his bout against Ali Funeka.[64]
11 Juan Manuel Márquez
(def. Juan Díaz) 		28 February 2009 – 26 January 2012 2
Márquez is stripped of the title for moving up to junior welterweight.[65]
12 Ricky Burns
(interim champion promoted) 		26 January 2012 4
13 Terence Crawford 1 March 2014 – 5 March 2015 2
Crawford vacates the title to move up to junior welterweight.[66]
14 Terry Flanagan
(def. Jose Zepeda) 		11 July 2015 – 26 October 2017 5
Flanagan vacated the title to move up to junior welterweight.[67]
15 Ray Beltrán
(def. Paulus Moses) 		16 February 2018 0
16 José Pedraza 25 August 2018 0
17 Vasiliy Lomachenko 8 December 2018 3
18 Teófimo López 17 October 2020 0
19 George Kambosos Jr. 27 November 2021 0
20 Devin Haney 5 June 2022 – present 2

Junior lightweight

No. Name Date Defenses
1 John John Molina
(def. Juan Laporte) 		29 April 1989 – 15 October 1989 0
Molina was stripped the title after fighting for the IBF title.[68]
2 Kamel Bou Ali
(def. Antonio Rivera) 		9 December 1989 2
3 Daniel Londas 21 March 1992 0
4 Jimmi Bredahl 4 September 1992 1
5 Oscar De La Hoya 5 March 1994 – 5 June 1994 1
De La Hoya vacated the title to move up to lightweight.[69]
6 Regilio Tuur
(def. Eugene Speed) 		24 September 1994 – 17 January 1997 6
Tuur retired as the WBO junior lightweight world champion.[70]
7 Barry Jones
(def. Wilson Palacio) 		19 December 1997 – 1998 0
Jones lost his boxing license after a brain scan found an anomaly. The WBO vacated his title before Jones regained his license.
8 Anatoly Alexandrov
(def. Julien Lorcy) 		16 May 1998 1
9 Acelino Freitas 7 August 1999 – 18 January 2004 11
Freitas vacated the title to stay at lightweight.[71]
10 Diego Corrales
(def. Joel Casamayor) 		6 March 2004 – 18 June 2004 0
Corrales vacated the title to move up to lightweight.[72]
11 Mike Anchondo
(def. Pablo Chacón) 		15 July 2004 0
12 Jorge Rodrigo Barrios 8 April 2005 – 15 September 2006 2
Barrios was stripped of the title after failing to make weight the day before his scheduled bout against Joan Guzmán.[73]
13 Joan Guzmán
(def. Jorge Rodrigo Barrios) 		16 September 2006 – 14 May 2008 2
Guzmán vacated the title to move up to lightweight after continued difficulties negotiating a bout against mandatory challenger Alex Arthur.[74]
14 Alex Arthur
(interim champion promoted) 		14 May 2008 0
15 Nicky Cook 9 September 2008 0
16 Román Martínez 14 March 2009 2
17 Ricky Burns 4 September 2010 – 13 September 2011 3
Burns vacated the title to move up to lightweight.[75]
18 Adrien Broner
(def. Vicente Martín Rodríguez) 		26 November 2011 – 20 July 2012 1
Broner was stripped of the title after failing to make weight the day before his scheduled bout against mandatory challenger Vicente Escobedo.[76]
19 Román Martínez (2)
(def. Miguel Beltrán Jr.) 		15 September 2012 2
20 Mikey Garcia 9 November 2013 – 14 October 2014 1
Garcia vacates the title to move up to junior welterweight.[77]
21 Orlando Salido
(interim champion promoted) 		14 October 2014 0
22 Román Martínez (3) 11 April 2015 1
23 Vasiliy Lomachenko 11 June 2016 – 23 May 2018 4
Lomachenko vacated the title after moving up in weight and defeating Jorge Linares for the WBA lightweight world championship.[78]
24 Masayuki Ito
(def. Christopher Díaz) 		28 July 2018 1
25 Jamel Herring 25 May 2019 3
26 Shakur Stevenson 23 October 2021 – 22 September 2022 1
Stevenson was stripped of the title after missing weight in his fight against mandatory challenger Robson Conceição.[79]
27 Emanuel Navarrete
(def. Liam Wilson) 		3 February 2023 – present 0

Featherweight

No. Name Date Defenses
1 Maurizio Stecca
(def. Pedro Nolasco) 		28 January 1989 1
2 Louie Espinoza 11 November 1989 0
3 Jorge Páez 7 April 1990 – 16 January 1991 1
Paez vacates the title to move up to junior lightweight.[80]
4 Maurizio Stecca (2)
(def. Armando Juan Reyes) 		26 January 1991 2
5 Colin McMillan 16 February 1992 0
6 Rubén Darío Palacio 26 September 1992 – 16 April 1993 0
Palacio was stripped of the title after failing a pre-fight medical examination due to testing positive for HIV.[81]
7 Steve Robinson
(def. John Davison) 		17 April 1993 7
8 Naseem Hamed 30 September 1995 – 5 October 2000 15
Hamed vacated the title after HBO refused to approve mandatory challenger István Kovács as his opponent.[82]
9 István Kovács
(def. Antonio Díaz) 		27 January 2001 0
10 Pablo Chacón 16 June 2001 2
11 Scott Harrison 19 October 2002 2
12 Manuel Medina 12 July 2003 0
13 Scott Harrison (2) 29 November 2003 – 6 December 2006 6
Harrison vacated the title after withdrawing from a bout against Nicky Cook because he could no longer make the featherweight limit.[83]
14 Juan Manuel Márquez
(interim champion promoted) 		6 December 2006 – 3 April 2007 0
Márquez vacated the title to stay at junior lightweight.[84]
15 Steven Luevano
(def. Nicky Cook) 		14 July 2007 5
16 Juan Manuel López 23 January 2010 1
17 Orlando Salido 16 April 2011 2
18 Mikey Garcia 19 January 2013 – 14 June 2013 0
Garcia was stripped of the title after failing to make weight the day before his scheduled bout against Juan Manuel López.[85]
19 Orlando Salido (2)
(def. Orlando Cruz) 		12 October 2013 – 28 February 2014 0
Salido was stripped of the title after failing to make weight the day before his scheduled bout against Vasiliy Lomachenko.[86]
20 Vasiliy Lomachenko
(def. Gary Russell Jr.) 		21 June 2014 – 21 July 2016 3
Lomachenko vacated the title to stay at junior lightweight.[87]
21 Óscar Valdez
(def. Matías Rueda) 		23 July 2016 – 2 August 2019 6
Valdez vacates the title to move up to junior lightweight.[88]
22 Shakur Stevenson
(def. Joet Gonzalez) 		26 October 2019 – 7 July 2020 0
Stevenson vacated the title to move up to junior lightweight.[89]
23 Emanuel Navarrete
(def. Ruben Villa) 		9 October 2020 – 9 February 2023 3
Navarrete vacated the title to stay at junior lightweight.[90]
24 Robeisy Ramírez
(def. Isaac Dogboe) 		1 April 2023 – present 0

Junior featherweight

No. Name Date Defenses
1 Kenny Mitchell
(def. Julio Gervacio) 		29 April 1989 1
2 Valerio Nati 9 December 1989 0
3 Orlando Fernandez 12 May 1990 0
4 Jesse Benavides 24 May 1991 1
5 Duke McKenzie 15 October 1992 0
6 Daniel Jiménez 9 June 1993 4
7 Marco Antonio Barrera 31 March 1995 8
8 Junior Jones 22 November 1996 1
9 Kennedy McKinney 18 April 1997 – 30 May 1998 0
McKinney vacated the title to challenge WBO featherweight champion Naseem Hamed however, the fight was cancelled after Hamed suffered an injury to his right hand during training.[91]
10 Marco Antonio Barrera (2)
(def. Richie Wenton) 		31 October 1998 2
11 Érik Morales 19 February 2000 – 24 February 2000 0
Morales was stripped of the title after the WBO committee disagreed with the scorecards in his bout against Barrera. Barrera was also reinstated as the champion.[92]
12 Marco Antonio Barrera (3)
(reinstated) 		24 February 2000 – 1 June 2001 2
Barrera vacated the title to stay at featherweight.[93]
13 Agapito Sánchez
(def. Jorge Monsalvo) 		23 June 2001 – 13 August 2002 1
Sánchez is stripped of the title for failing a pre-fight eye test.[94]
14 Joan Guzmán
(def. Fabio Daniel Oliva) 		17 August 2002 – 4 July 2005 2
Guzmán vacated the title to move up to featherweight.[95]
15 Daniel Ponce de León
(def. Sod Looknongyangtoy) 		29 October 2005 6
16 Juan Manuel López 7 June 2008 – January 2010 5
López vacated the title to move up to featherweight.
17 Wilfredo Vázquez Jr.
(def. Marvin Sonsona) 		27 February 2010 2
18 Jorge Arce 7 May 2011 – 18 November 2011 1
Arce vacated the title to move down to bantamweight.[96]
19 Nonito Donaire
(def. Wilfredo Vázquez Jr.) 		4 February 2012 3
20 Guillermo Rigondeaux 13 April 2013 – 28 October 2015 3
Rigondeaux was stripped of the title due to inactivity.[97]
21 Nonito Donaire (2)
(def. César Juárez) 		11 December 2015 1
22 Jessie Magdaleno 5 November 2016 1
23 Isaac Dogboe 28 April 2018 1
24 Emanuel Navarrete 8 December 2018 – 11 July 2020 5
Navarrete vacated the title to move up to featherweight.[98]
25 Angelo Leo
(def. Tramaine Williams) 		1 August 2020 0
26 Stephen Fulton 23 January 2021 – present 2

Bantamweight

No. Name Date Defenses
1 Israel Contreras
(def. Maurizio Lupino) 		3 February 1989 – 20 February 1991 1
Contreras vacated the title in order to challenge Luisito Espinosa for the WBA title.[99]
2 Gaby Canizales
(def. Miguel Lora) 		12 March 1991 0
3 Duke McKenzie 30 June 1991 2
4 Rafael del Valle 13 May 1992 2
5 Alfred Kotey 30 July 1994 2
6 Daniel Jiménez 21 October 1995 1
7 Robbie Regan 26 April 1996 – 18 July 1997 0
Regan vacated the title due to health problems.[100]
8 Jorge Eliécer Julio
(def. Oscar Maldonado) 		28 July 1997 3
9 Johnny Tapia 8 January 2000 – 16 August 2000 1
Tapia vacated the title to fight Paulie Ayala at junior featherweight.[101]
10 Mauricio Martínez
(def. Lester Fuentes) 		4 September 2000 1
11 Cruz Carbajal 15 March 2002 2
12 Ratanachai Sor Vorapin 7 May 2004 1
13 Jhonny González 29 October 2005 1
14 Gerry Peñalosa 11 August 2007 – 25 April 2009 1
Peñalosa was stripped of the title after moving up and challenging WBO junior featherweight champion Juan Manuel López.[102]
15 Fernando Montiel
(interim champion promoted) 		25 April 2009 2
16 Nonito Donaire 19 February 2011 – 22 October 2011 1
Donaire vacates the title to move up to junior featherweight.[103]
17 Jorge Arce
(def. Angky Angkotta) 		26 November 2011 – 15 August 2012 0
Arce intends to stay at junior featherweight. The title is vacated on WBO's August 2012 rankings.[104]
18 Pungluang Sor Singyu
(def. A. J. Banal) 		20 October 2012 0
19 Paulus Ambunda 2 March 2013 0
20 Tomoki Kameda 1 August 2013 – 23 April 2015 3
Kameda's request to make his fight with Jamie McDonnell a unification bout was rejected by the WBO as McDonnell was only the "regular" champion which is considered a secondary title by the WBO.[105] As a result, Kameda relinquished his title.[106]
21 Pungluang Sor Singyu (2)
(def. Ryo Akaho) 		8 August 2015 1
22 Marlon Tapales 27 July 2016 – 22 April 2017 0
Tapales was stripped of the title after failing to make weight the day before his bout against Shohei Omori.[107]
23 Zolani Tete
(interim champion promoted) 		23 April 2017 3
24 John Riel Casimero 30 November 2019 – 3 May 2022 2
Casimero was stripped of the title after the fight with his mandatory challenger, Paul Butler got cancelled for the second time. According to the British Boxing Board of Control, the fight was called off due to Casimero cutting too much weight and using a sauna prior to the weigh-ins.[108]
25 Paul Butler
(interim champion promoted) 		3 May 2022 0
26 Naoya Inoue 13 December 2022 – 13 January 2023 0
Inoue vacated the title in order to move up to junior featherweight.[109]

Junior bantamweight

No. Name Date Defenses
1 José Ruíz Matos
(def. Bebis Rojas) 		29 April 1989 4
2 José Quirino 22 February 1992 0
3 Johnny Bredahl 4 September 1992 – 16 July 1994 3
Bredahl was stripped of the title.[110]
4 Johnny Tapia
(def. Henry Martínez) 		14 October 1994 – December 1998 13
Tapia vacates the title to move up to bantamweight.
5 Victor Godoi
(interim champion promoted) 		December 1998 0
6 Diego Morales 7 June 1999 1
7 Adonis Rivas 20 November 1999 2
8 Pedro Alcázar 16 June 2001 1
9 Fernando Montiel 22 June 2002 1
10 Mark Johnson 16 August 2003 1
11 Iván Hernández 25 September 2004 0
12 Fernando Montiel (2) 9 April 2005 – 10 February 2009 6
Montiel reportedly was open in fighting Vic Darchinyan for the undisputed championship however,[111] on the following day, Montiel's title was reportedly vacated.[112]
13 José López
(def. Pramuansak Posuwan) 		28 March 2009 0
14 Marvin Sonsona 4 September 2009 – 20 November 2009 0
Sonsona was stripped of the title after failing to make weight on the day of his bout against Alejandro Hernández.[113]
15 Jorge Arce
(def. Angky Angkotta) 		30 January 2010 – April 2010 0
Arce vacates his title to move up to bantamweight.
16 Omar Narváez
(def. Everth Briceño) 		15 May 2010 11
17 Naoya Inoue 30 December 2014 – 6 March 2018 7
Inoue vacates the title to move up to bantamweight.[114]
18 Donnie Nietes
(def. Kazuto Ioka) 		31 December 2018 – 28 February 2019 0
Nietes vacates the title to pursue a career-defining fight.[115]
19 Kazuto Ioka
(def. Aston Palicte) 		19 June 2019 – 15 February 2023 6
Ioka vacates the title to pursue a rematch with Joshua Franco.[116]

Flyweight

No. Name Date Defenses
1 Elvis Álvarez
(def. Miguel Mercedes) 		3 March 1989 – 1990 0
Álvarez vacates the title due to lack of interest in it.
2 Isidro Pérez
(def. Angel Rosario) 		18 August 1990 2
3 Pat Clinton 18 March 1992 1
4 Jacob Matlala 15 May 1993 3
5 Alberto Jiménez 11 February 1995 5
6 Carlos Gabriel Salazar 13 December 1996 5
7 Ruben Sánchez León 14 August 1998 1
8 José Antonio López Bueno 23 April 1999 – 1999 1
Bueno vacates the title due to an ankle injury thus preventing him from defending the title.
9 Isidro García
(def. José López) 		18 December 1999 1
10 Fernando Montiel 15 December 2000 – 22 June 2002 3
Montiel's title was vacated when he stepped on the ring against Pedro Alcázar for his WBO junior bantamweight title.[117]
11 Adonis Rivas
(interim champion promoted) 		22 June 2002 0
12 Omar Narváez 13 July 2002 – 14 May 2010 16
Narváez vacates the title to move up to junior bantamweight.[118]
13 Julio César Miranda
(def. Richie Mepranum) 		12 June 2010 3
14 Brian Viloria 16 July 2011 3
15 Juan Francisco Estrada 6 April 2013 – 14 September 2016 5
Estrada vacates the title to move up to junior bantamweight.[119]
16 Zou Shiming
(def. Prasitsak Phaprom) 		5 November 2016 0
17 Sho Kimura 28 July 2017 2
18 Kosei Tanaka 24 September 2018 – 31 January 2020 3
Tanaka vacates the title to move up to junior bantamweight.[120]
19 Junto Nakatani
(def. Giemel Magramo) 		6 November 2020 – 27 October 2022 2
Nakatani vacates the title to move up to junior bantamweight.[121]
20 Jesse Rodriguez
(def. Christian Gonzalez) 		8 April 2023 – present 0

Junior flyweight

No. Name Date Defenses
1 José de Jesús
(def. Fernando Martínez) 		19 May 1989 – March 1992 3
de Jesús was stripped of the title after failing to defend it in a specific time period.
2 Josué Camacho
(def. Eddie Vallejo) 		31 July 1992 1
3 Michael Carbajal 15 July 1994 – 12 November 1994 0
Carbajal is stripped of the title for failing to defend the title.
4 Paul Weir
(def. Paul Oulden) 		23 November 1994 1
5 Jacob Matlala 18 November 1995 – 1997 2
Matlala vacates the title to fight Michael Carbajal rather than defend his title.
6 Jesús Chong
(def. Eric Griffin) 		31 May 1997 0
7 Melchor Cob Castro 25 August 1997 0
8 Juan Domingo Córdoba 17 January 1998 1
9 Jorge Arce 5 December 1998 1
10 Michael Carbajal (2) 31 July 1999 – August 1999 0
Carbajal retires.
11 Masibulele Makepula
(def. Jacob Matlala) 		19 February 2000 – 2000 0
Makepula vacates the title to move up to flyweight.
12 Nelson Dieppa
(def. Andy Tabanas) 		14 April 2001 5
13 Hugo Cázares 30 April 2005 4
14 Iván Calderón 25 August 2007 6
15 Giovani Segura 28 August 2010 – 22 April 2011 1
Segura vacates the title to move up to flyweight.[122]
16 Jesús Géles
(interim champion promoted) 		22 April 2011 0
17 Ramón García Hirales 30 April 2011 0
18 Donnie Nietes 8 October 2011 – 3 August 2016 9
Nietes vacates the title to move up to flyweight.[123]
19 Kosei Tanaka
(def. Moisés Fuentes) 		31 December 2016 – 30 November 2017 2
Tanaka vacates the title to move up to flyweight.[124]
20 Ángel Acosta
(def. Juan Alejo) 		2 December 2017 3
21 Elwin Soto 21 June 2019 3
22 Jonathan González 16 October 2021 – present 2

Mini flyweight

No. Name Date Defenses
1 Rafael Torres
(def. Yamil Caraballo) 		30 August 1989 – 1993 1
Torres vacates the title.
2 Paul Weir
(def. Fernando Martínez) 		15 May 1993 – 16 December 1993 1
Weir vacates the title to move up in weight and challenge Josué Camacho for a junior flyweight world title.[125]
3 Alex Sánchez
(def. Orlando Malone) 		22 December 1993 6
4 Ricardo López 23 August 1997 – August 1997 0
After winning the title, López was stripped of the title after he stated that he would give the championship belt to his father. The WBO president at that time deemed it as a "public resignation".[126]
5 Eric Jamili
(def. Mickey Cantwell) 		19 December 1997 0
6 Kermin Guardia 30 May 1998 – 2001 3
Guardia vacates the title to move up to junior flyweight.
7 Jorge Mata
(def. Reynaldo Frutos) 		29 June 2002 1
8 Eduardo Ray Márquez 28 March 2003 0
9 Iván Calderón 3 May 2003 – 25 August 2007 11
Calderón's title is vacated when he won the WBO junior flyweight title.
10 Donnie Nietes
(def. Pornsawan Porpramook) 		30 September 2007 – 28 February 2011 4
Nietes vacates the title to move up in weight and challenge Ramón García Hirales for the WBO junior flyweight title.[127]
11 Raúl García
(interim champion promoted) 		28 February 2011 1
12 Moisés Fuentes 27 August 2011 – 19 April 2013 2
Fuentes vacates the title to move up to junior flyweight.[128]
13 Merlito Sabillo
(interim champion promoted) 		19 April 2013 2
14 Francisco Rodríguez Jr. 22 March 2014 – 15 December 2014 1
Rodríguez intends to move in weight class. The title is vacated on WBO's December 2014 rankings.[129]
15 Katsunari Takayama
(def. Go Odaira) 		31 December 2014 – 3 March 2015 0
Takayama vacates his WBO title to skip his mandatory challenger in favor of a fight with former champion Fahlan Sakkreerin.[130]
16 Kosei Tanaka
(def. Julián Yedras) 		30 May 2015 – 7 April 2016 1
Tanaka vacates the title to move up to junior flyweight.[131]
17 Katsunari Takayama (2)
(def. Riku Kano) 		20 August 2016 – 3 April 2017 0
Takayama retired from professional boxing in order to concentrate on training for the 2020 Summer Olympics.[132] Interim champion Fukura is later promoted to full champion.[133]
18 Tatsuya Fukuhara
(interim champion promoted) 		14 April 2017 0
19 Ryuya Yamanaka 27 August 2017 1
20 Vic Saludar 13 July 2018 1
21 Wilfredo Méndez 24 August 2019 2
22 Masataka Taniguchi 14 December 2021 1
23 Melvin Jerusalem 6 January 2023 – present 0

See also

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