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List of WBO world champions

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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.

Heavyweight

No.NameReignDefenses12Mercer was stripped of the title in December 1991 for signing for a bout against Larry Holmes instead of mandatory challenger Michael Moorer.3{{smallMoorer vacated the title so that he could be ranked by other sanctioning bodies.{{cite newsdate=9 February 1993work=The News Journaltitle=Bowe must face legitimate challengers now4567{{smallBowe was stripped of the title when he rejected Don King's purse offer.{{cite newsdate=5 May 1996work=The Boston Globetitle=Incentive may solve bulk of the problem8Akinwande 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for the vacant belt.910111213Sanders vacated the title to sign with Don King.141516171819Fury, who had previously withdrawn from a rematch against Wladimir Klitschko before testing positive in a Voluntary Anti-Doping Association (VADA) test for cocaine on 29 September, vacated the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.2021222324Usyk vacated the title.25
Francesco Damiani
(def. Johnny du Plooy)6 May 1989 – 11 Jan 19911
Ray Mercer11 Jan – 28 Dec 19911
Michael Moorer
(def. Bert Cooper)15 May 1992 – 8 Feb 19930
location=Wilmington, Delawareaccess-date=9 November 2021via=Newspapers.comurl-access=subscription }}}}
Tommy Morrison
(def. George Foreman)7 Jun – 29 Oct 19931
Michael Bentt29 Oct 1993 – 19 Mar 19940
Herbie Hide19 Mar 1994 – 11 Mar 19950
Riddick Bowe11 Mar 1995 – 5 May 19961
location=Boston, Massachusettsaccess-date=9 November 2021via=Newspapers.comurl-access=subscription }}}}
Henry Akinwande
(def. Jeremy Williams)29 Jun 1996 – 29 Jan 19972
Herbie Hide (2)
(def. Tony Tucker)28 Jun 1997 – 26 Jun 19992
Vitali Klitschko26 Jun 1999 – 1 Apr 20002
Chris Byrd1 Apr – 14 Oct 20000
Wladimir Klitschko14 Oct 2000 – 8 Mar 20035
Corrie Sanders8 Mar – 7 Oct 20030
Lamon Brewster
(def. Wladimir Klitschko)10 Apr 2004 – 1 Apr 20063
Siarhei Liakhovich1 Apr – 4 Nov 20060
Shannon Briggs4 Nov 2006 – 2 Jun 20070
Sultan Ibragimov2 Jun 2007 – 23 Feb 20081
Wladimir Klitschko (2)23 Feb 2008 – 28 Nov 201514
Tyson Fury28 Nov 2015 – 12 Oct 20160
Joseph Parker
(def. Andy Ruiz Jr.)10 Dec 2016 – 31 Mar 20182
Anthony Joshua31 Mar 2018 – 1 Jun 20191
Andy Ruiz Jr.1 Jun – 7 Dec 20190
Anthony Joshua (2)7 Dec 2019 – 25 Sep 20211
Oleksandr Usyk25 Sep 2021 – 17 Nov 20255
Fabio Wardley
(interim champion promoted)17 Nov 2025 – Present0

Junior heavyweight

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

No.NameReignDefenses12Havnå vacates the title.3456Michalczewski vacated the title in favor of the WBO light heavyweight title, which he already held.789Nelson retired after suffering a back injury during training camp for his bout against Enzo Maccarinelli.1011Haye vacates the title to move up to heavyweight.12131415Usyk vacated the title to move up to heavyweight.1617Briedis stripped of title for disagreeing to an immediate rematch with Głowacki.181920
Boone Pultz
(def. Magne Havnå)3 Dec 1989 – 17 May 19900
Magne Havnå17 May 1990 – 19912
Tyrone Booze
(def. Derek Angol)25 Jul 1992 – 13 Feb 19931
Markus Bott13 Feb – 26 Jun 19930
Nestor Hipolito Giovannini26 Jun 1993 – 17 Dec 19941
Dariusz Michalczewski17 Dec 1994 – Mar 19950
Ralf Rocchigiani
(def. Carl Thompson)10 Jun 1995 – 4 Oct 19976
Carl Thompson4 Oct 1997 – 27 Mar 19992
Johnny Nelson27 Mar 1999 – 22 Sep 200613
Enzo Maccarinelli
(interim champion promoted)22 Sep 2006 – 8 Mar 20084
David Haye8 Mar – 14 Jul 20080
Victor Emilio Ramírez
(interim champion promoted)Feb – 5 Dec 20091
Marco Huck5 Dec 2009 – 14 Aug 201513
Krzysztof Głowacki14 Aug 2015 – 17 Sep 20161
Oleksandr Usyk17 Sep 2016 – 5 Jun 20196
Krzysztof Głowacki (2)
(interim champion promoted)5 Jun – 15 Jun 20190
Mairis Briedis15 Jun – 25 Nov 20190
Lawrence Okolie
(def. Krzysztof Głowacki)20 Mar 2021 – 27 May 20233
Chris Billam-Smith27 May 2023 – 16 Nov 20242
Gilberto Ramírez16 Nov 2024 – present1

Light heavyweight

No.NameReignDefenses1Moorer vacated the title to move up to heavyweight.2345Erdei vacated the title to move up to cruiserweight.6Brähmer was stripped of the title after withdrawing from a bout against Nathan Cleverly, citing an eye injury.789Ward retires.10111213Álvarez vacated the title to move down to super middleweight.141516
Michael Moorer
(def. Ramzi Hassan)3 Dec 1988 – 19919
Leeonzer Barber
(def. Tom Collins)9 May 1991 – 10 Sep 19944
Dariusz Michalczewski10 Sep 1994 – 10 Oct 200323
Julio César González10 Oct 2003 – 17 Jan 20040
Zsolt Erdei17 Jan 2004 – 13 Nov 200911
Jürgen Brähmer
(interim champion promoted)13 Nov 2009 – 19 May 20112
Nathan Cleverly
(interim champion promoted)19 May 2011 – 18 Aug 20135
Sergey Kovalev18 Aug 2013 – 19 Nov 20168
Andre Ward19 Nov 2016 – 21 Sep 20171
Sergey Kovalev (2)
(def. Vyacheslav Shabranskyy)25 Nov 2017 – 4 Aug 20181
Eleider Álvarez4 Aug 2018 – 2 Feb 20190
Sergey Kovalev (3)2 Feb – 2 Nov 20191
Canelo Álvarez2 Nov – 17 Dec 20190
Joe Smith Jr.
(def. Maxim Vlasov)10 Apr 2021 – 18 Jun 20221
Artur Beterbiev18 Jun 2022 – 22 Feb 20253
Dmitry Bivol22 Feb 2025 – present0

Super middleweight

No.NameReignDefenses1{{smallHearns's title was vacated on WBO's April 1991 ratings posted on 8 May.{{cite newsdate=8 May 1991work=Quad City Timestitle=The World Boxing Organization ratings as of April 15, 199123Collins 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.4Calzaghe, citing difficulty making weight, vacated the title after moving up to light heavyweight.567891011Ramírez vacates the title to move up to light heavyweight.121314Crawford vacated the title five days after announcing his retirement.
Thomas Hearns
(def. James Kinchen)4 Nov 1988 – 20 May 19912
location=Davenport, Iowaaccess-date=9 November 2021via=Newspapers.comurl-access=subscription }} He later moved up to light heavyweight.}}
Chris Eubank
(def. Michael Watson)21 Sep 1991 – 18 Mar 199514
Steve Collins18 Mar 1995 – 2 Oct 19977
Joe Calzaghe
(def. Chris Eubank)11 Oct 1997 – 26 Sep 200821
Denis Inkin
(def. Fulgencio Zuniga)27 Sep 2008 – 10 Jan 20090
Károly Balzsay10 Jan – 22 Aug 20091
Robert Stieglitz22 Aug 2009 – 25 Aug 20126
Arthur Abraham25 Aug 2012 – 23 Mar 20131
Robert Stieglitz (2)23 Mar 2013 – 1 Mar 20142
Arthur Abraham (2)1 Mar 2014 – 9 Apr 20165
Gilberto Ramírez9 Apr 2016 – 13 May 20195
Billy Joe Saunders
(def. Shefat Isufi)18 May 2019 – 8 May 20212
Canelo Álvarez8 May 2021 – 13 Sep 20256
Terence Crawford13 Sep 2025 – 21 Dec 20250

Middleweight

No.NameReignDefenses123{{smallEubank was expected to move up to super middleweight,{{cite newsdate=16 July 1991work=Evening Standardtitle=Eubank fight put back4{{smallMcClellan vacated the title to move up to super middleweight.{{cite newsdate=2 April 1993work=The Philadelphia Inquirertitle=Kalambay to fight Pyatt for the vacant WBO title56{{smallCollins vacated the title to stay super middleweight.{{cite newsdate=22 April 1995work=Daily Newstitle=George eyes next cupcake7{{smallRhodes and Grant was supposedly going to fight for the interim title because of Bradley's injury,{{cite newsdate=30 October 1997work=The Gazettetitle=Boxer Grant gets shot at world title8Grant vacated the title to move up to light heavyweight and challenge Roy Jones Jr.9{{smallSchenk vacated the title due to acute lumbago.{{cite newsdate=14 July 1999work=El Nuevo Heraldtitle=Schenk deja vacante el titulo mediano OMBlanguage=Spanish1011Krajnc 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{{smallSimon was involved in a car accident{{cite newsdate=26 December 2002work=Tallahassee Democrattitle=Boxing champ Harry Simon charged with culpable homicide after car accident13141516171819{{smallMartínez, 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.{{cite newslast=Rafaelfirst=Dandate=1 June 2010title=WBO strips Martinez of title20Pirog is stripped of title for choosing to fight Gennady Golovkin instead of mandatory challenger Hassan N'Dam N'Jikam.2122Quillin vacated the title after pulling out of his scheduled bout against mandatory challenger Matt Korobov.2324Saunders 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.25Andrade vacated the title to move up to super middleweight.26
Doug DeWitt
(def. Robbie Sims)18 Apr 1989 – 29 Apr 19901
Nigel Benn29 Apr – 18 Nov 19901
Chris Eubank18 Nov 1990 – 17 Jul 19913
location=London, Greater Londonaccess-date=9 November 2021via=Newspapers.comurl-access=subscription }} the title was then reportedly vacated 1 day after.{{cite newsdate=17 July 1991work=Evening Standardtitle=Hearn is making plans for Nigellocation=London, Greater Londonaccess-date=9 November 2021via=Newspapers.comurl-access=subscription }}}}
Gerald McClellan
(def. John Mugabi)20 Nov 1991 – 2 Apr 19930
location=Philadelphia, Pennsylvaniaaccess-date=9 November 2021via=Newspapers.comurl-access=subscription }}}}
Chris Pyatt
(def. Sumbu Kalambay)19 May 1993 – 11 May 19942
Steve Collins11 May 1994 – 22 Apr 19950
location=New York, New Yorkaccess-date=9 November 2021via=Newspapers.comurl-access=subscription }}}}
Lonnie Bradley
(def. David Mendez)19 May 1995 – 7 Nov 19976
location=Montreal, Quebecaccess-date=11 November 2021via=Newspapers.comurl-access=subscription }} but was later changed to the vacant title.{{cite newsdate=7 November 1997work=The Guardiantitle=Ryan Rhodes will meet Canada's Otis Grant for the vacant WBO middleweight title at the Ponds Forge Leisure Centre in Rhodes's home town of Sheffield on December 1location=London, Greater Londonaccess-date=11 November 2021via=Newspapers.comurl-access=subscription }}}}
Otis Grant
(def. Ryan Rhodes)13 Dec 1997 – 14 Nov 19981
Bert Schenk
(def. Freeman Barr)30 Jan – 14 Jul 19991
location=Miami, Floridaaccess-date=11 November 2021via=Newspapers.comurl-access=subscription }}}}
Jason Matthews
(def. Ryan Rhodes)17 Jul – 27 Nov 19990
Armand Krajnc27 Nov 1999 – 6 Apr 20023
Harry Simon6 Apr 2002 – 8 Jul 20030
location=Tallahassee, Floridaaccess-date=11 November 2021via=Newspapers.comurl-access=subscription }} and was sidelined for 8 months resulting in being stripped of the title.}}
Héctor Velazco
(interim champion promoted)8 Jul – 13 Sep 20030
Felix Sturm13 Sep 2003 – 5 Jun 20041
Oscar De La Hoya5 Jun – 18 Sep 20040
Bernard Hopkins18 Sep 2004 – 16 Jul 20051
Jermain Taylor16 Jul 2005 – 29 Sep 20073
Kelly Pavlik29 Sep 2007 – 17 Apr 20103
Sergio Martínez17 Apr – 29 May 20100
url-status=livework=ESPNarchive-url=https://web.archive.org/web/20180929000656/https://www.espn.com/sports/boxing/news/story?id=5238745archive-date=29 September 2018access-date=4 July 2019}}}}
Dmitry Pirog
(def. Daniel Jacobs)31 Jul 2010 – 25 Aug 20123
Hassan N'Dam N'Jikam
(interim champion promoted)25 Aug – 20 Oct 20120
Peter Quillin20 Oct 2012 – 4 Sep 20143
Andy Lee
(def. Matt Korobov)13 Dec 2014 – 19 Dec 20150
Billy Joe Saunders19 Dec 2015 – 11 Oct 20183
Demetrius Andrade
(def. Walter Kautondokwa)20 Oct 2018 – 26 Aug 20225
Janibek Alimkhanuly
(interim champion promoted)26 Aug 2022 – present4

Junior middleweight

No.NameReignDefenses1{{smallThe title was vacated after an incorrect NC call in his bout against Martin Camara.{{cite newsdate=18 February 1990work=The Montana Standardtitle= Title's vacant following draw2{{smallJackson vacated the title to move up to middleweight.{{cite newsdate=5 August 1993work=Daily Newstitle=Bowe-Holyfield II on the way34Jones was stripped of the title after withdrawing from a bout against no. 1 contender Bronco McKart.567Simon vacated the title to move up to middleweight.89Dzindziruk was stripped of the title due to inactivity caused by injuries.10Baysangurov was stripped of the title in July 2013 after withdrawing from a bout against mandatory challenger Demetrius Andrade.11Andrade was stripped of the title due to inactivity.1213{{smallÁlvarez intends to stay at middleweight. The title is vacated on WBO's May 2017 rankings.{{cite web141516Munguia vacated the title to move up to middleweight.171819Charlo stripped of the title for fighting Canelo Álvarez instead of mandatory challenger Tim Tszyu.2021Fundora is stripped of the title for refusing to participate in his scheduled purse bid.22
John David Jackson
(def. Lupe Aquino)8 Dec 1988 – 17 Feb 19901
location=Butte, Montanaaccess-date=11 November 2021via=Newspapers.comurl-access=subscription }}}}
John David Jackson (2)
(def. Chris Pyatt)23 Oct 1990 – 5 Aug 19933
location=New York, New Yorkaccess-date=11 November 2021via=Newspapers.comurl-access=subscription }}}}
Verno Phillips
(def. Lupe Aquino)30 Oct 1993 – 22 Nov 19954
Paul Jones22 Nov 1995 – 26 Feb 19960
Bronco McKart
(def. Santos Cardona)1 Mar – 17 May 19960
Winky Wright17 May 1996 – 22 Aug 19983
Harry Simon22 Aug 1998 – 27 Nov 20014
Daniel Santos
(def. Yori Boy Campas)16 Mar 2002 – 3 Dec 20054
Serhiy Dzyndzyruk3 Dec 2005 – 5 Oct 20116
Zaurbek Baysangurov
(interim champion promoted)5 Oct 2011 – 22 Jul 20132
Demetrius Andrade
(def. Vanes Martirosyan)9 Nov 2013 – 31 Jul 20151
Liam Smith
(def. John Thompson)10 Oct 2015 – 17 Sep 20162
Canelo Álvarez17 Sep 2016 – 21 May 20170
url= http://www.wboboxing.com/wp-content/uploads/2017/05/1705-WBO-Ranking-as-of-May-15-2017-5_25_17.pdftitle=Ranking as of May 21 2017publisher=WBAaccess-date=4 October 2021}}}}
Miguel Cotto
(def. Yoshihiro Kamegai)26 Aug – 2 Dec 20170
Sadam Ali2 Dec 2017 – 12 May 20180
Jaime Munguía12 May 2018 – 23 Nov 20195
Patrick Teixeira
(interim champion promoted)4 Dec 2019 – 13 Feb 20210
Brian Castaño13 Feb 2021 – 14 May 20221
Jermell Charlo14 May 2022 – 30 Sep 20230
Tim Tszyu
(interim champion promoted)30 Sep 2023 – 30 Mar 20241
Sebastian Fundora30 Mar 2024 – 2 May 20251
Xander Zayas
(def. Jorge Garcia Perez)26 Jul 2025 – present1

Welterweight

No.NameReignDefenses1{{smallLéon's title was vacated on WBO's November 1989 ratings posted on 28 November.{{cite newsdate=28 November 1989work=Pottsville Republicantitle=The World Boxing Organization ratings as of November 198923Jacobsen was stripped of the title after withdrawing from a bout against Eamonn Loughran due to suffering from the flu.45López was stripped of the title after testing positive for marijuana.6Leu retires.78{{smallSantos vacated the title to move up to junior middleweight.{{cite newsdate=5 December 2001work=La Voz Espanatitle=Definenal fin la fecha9101112Williams vacated the title to move up in weight and fight for the vacant WBO interim junior middleweight title.1314151617Mayweather 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.18Bradley vacated the title after he chose to fight Manny Pacquiao instead of mandatory challenger Sadam Ali.19202122Crawford vacated the title to stay at junior middleweight.2324
Genaro León
(def. Danny Garcia)6 May – 28 Nov 19890
location=Pottsville, Pennsylvaniaaccess-date=9 November 2021via=Newspapers.comurl-access=subscription }}}}
Manning Galloway
(def. Al Hamza)15 Dec 1989 – 12 Feb 19937
Gert Bo Jacobsen12 Feb – 13 Oct 19930
Eamonn Loughran
(def. Lorenzo Smith)16 Oct 1993 – 13 Apr 19965
José Luis López13 Apr – 21 Nov 19961
Mihai Leu
(def. Santiago Samaniego)22 Feb 1997 – 19971
Akhmed Kotiev
(interim champion promoted)14 Feb 1998 – 6 May 20004
Daniel Santos6 May 2000 – 5 Dec 20012
location=Allentown, Pennsylvaniaaccess-date=9 November 2021via=Newspapers.comurl-access=subscription }}}}
Antonio Margarito
(def. Antonio Díaz)16 Mar 2002 – 14 Jul 20077
Paul Williams14 Jul 2007 – 9 Feb 20080
Carlos Quintana9 Feb – 7 Jun 20080
Paul Williams (2)7 Jun – 14 Nov 20080
Miguel Cotto
(def. Michael Jennings)21 Feb – 14 Nov 20091
Manny Pacquiao14 Nov 2009 – 9 Jun 20123
Timothy Bradley9 Jun 2012 – 12 Apr 20142
Manny Pacquiao (2)12 Apr 2014 – 2 May 20151
Floyd Mayweather Jr.2 May – 6 Jul 20150
Timothy Bradley (2)
(interim champion promoted)6 Jul 2015 – 9 Feb 20161
Jessie Vargas
(def. Sadam Ali)5 Mar – 5 Nov 20160
Manny Pacquiao (3)5 Nov 2016 – 2 Jul 20170
Jeff Horn2 Jul 2017 – 9 Jun 20181
Terence Crawford9 Jun 2018 – 12 Aug 20247
Brian Norman Jr.
(interim champion promoted)12 Aug 2024 – 22 Nov 20252
Devin Haney22 Nov 2025 – present0

Junior welterweight

No.NameReignDefenses123{{SmallCamacho vacated the title to challenge the WBC champion Julio Cesar Chavez.{{cite newsdate=15 May 1992work=El Nuevo Heraldtitle=San Juan45{{smallPadilla was experiencing continuous severe headaches and was found to have a small blood clot near his brain. The title was vacated.{{cite newsdate=1 January 1995work=Tampa Bay Timestitle=At Inglewood, Calif.678910Julio vacated the title when a routine eye exam reveals that he has cataracts.1112Judah vacated the title to move up to the welterweight division.13Cotto vacated the title to move up to welterweight.141516Bradley vacated the title after moving up to welterweight.17The 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.181920Algieri vacated the title due to moving up and challenging WBO welterweight champion Manny Pacquiao.21Crawford vacated the title to move up to welterweight.2223242526
Héctor Camacho
(def. Ray Mancini)6 Mar 1989 – 23 Feb 19912
Greg Haugen23 Feb – 18 May 19910
Héctor Camacho (2)18 May 1991 – 15 May 19920
location=Miami, Floridaaccess-date=9 November 2021via=Newspapers.comurl-access=subscription }}}}
Carlos González
(def. Jimmy Paul)29 Jun 1992 – 7 Jun 19933
Zack Padilla7 Jun 1993 – 1 Jan 19954
location=St. Petersburg, Floridaaccess-date=9 November 2021via=Newspapers.comurl-access=subscription }}}}
Sammy Fuentes
(def. Fidel Avendano)20 Feb 1995 – 9 Mar 19961
Giovanni Parisi9 Mar 1996 – 29 May 19985
Carlos González (2)29 May 1998 – 15 May 19990
Randall Bailey15 May 1999 – 22 Jul 20002
Ener Julio22 Jul 2000 – 25 Jun 20010
DeMarcus Corley
(def. Felix Flores)30 Jun 2001 – 12 Jul 20032
Zab Judah12 Jul 2003 – 18 Jun 20041
Miguel Cotto
(def. Kelson Pinto)11 Sep 2004 – 27 Oct 20066
Ricardo Torres
(def. Mike Arnaoutis)18 Nov 2006 – 5 Jul 20083
Kendall Holt5 July 2008 – 4 Apr 20091
Timothy Bradley4 Apr 2009 – 27 Jun 20123
Juan Manuel Márquez
(interim champion promoted)27 Jun 2012 – 12 Oct 20130
Mike Alvarado
(interim champion promoted)12 Oct – 19 Oct 20130
Ruslan Provodnikov19 Oct 2013 – 14 Jun 20140
Chris Algieri14 Jun – 2 Nov 20140
Terence Crawford
(def. Thomas Dulorme)18 Apr 2015 – 26 Oct 20176
Maurice Hooker
(def. Terry Flanagan)9 Jun 2018 – 28 Jul 20192
José Ramírez28 Jul 2019 – 22 May 20211
Josh Taylor22 May 2021 – 10 Jun 20231
Teofimo Lopez10 Jun 2023 – 31 Jan 20263
Shakur Stevenson31 Jan 2026 – present0

Lightweight

No.NameReignDefenses12{{smallThobela's title was vacated after failing to find an opponent by 14 June; the deadline set by the WBO.{{cite newsdate=12 May 1992work=Sacramento Beetitle=Lopez is wooed by Stockton promoter3{{smallParisi vacates the title to move up to junior welterweight.{{cite newsdate=23 January 1994work=El Nuevo Heraldtitle= CMB anuncia pelea Parisi vs JC Chavezlanguage=Spanish4{{smallDe La Hoya vacates the title to move up to junior welterweight.{{cite newsdate=9 February 1996work=The Recordtitle=Just tuning up for showdown567Corrales was stripped of the title after deciding to pursue a rematch with José Luis Castillo instead of his mandatory challenger Acelino Freitas.8910Campbell was stripped of his unified IBF/WBO world titles after failing to make weight the day before his bout against Ali Funeka.11Márquez is stripped of the title for moving up to junior welterweight.1213{{smallCrawford vacates the title to move up to junior welterweight.{{cite newsauthor=date=5 March 2015title=Undefeated Terence Crawford moves up for junior welterweight title shot14Flanagan vacated the title to move up to junior welterweight.151617181920Haney vacated the title to move up to junior welterweight.2122Davis is stripped of the title for missing weight in his mandatory bout.23
Mauricio Aceves
(def. Amancio Castro)6 May 1989 – 22 Sep 19901
Dingaan Thobela22 Sep 1990 – 14 Jun 19922
location=Sacramento, Californiaaccess-date=14 November 2021via=Newspapers.comurl-access=subscription }}}}
Giovanni Parisi
(def. Javier Altamirano)25 Sep 1992 – 23 Jan 19942
location=Miami, Floridaaccess-date=9 November 2021via=Newspapers.comurl-access=subscription }}}}
Oscar De La Hoya
(def. Jorge Páez)29 Jul 1994 – 9 Feb 19966
location=Hackensack, New Jerseyaccess-date=14 November 2021via=Newspapers.comurl-access=subscription }}}}
Artur Grigorian
(def. Antonio Rivera)13 Apr 1996 – 3 Jan 200417
Acelino Freitas3 Jan – 7 Aug 20040
Diego Corrales7 Aug 2004 – 14 Jan 20061
Acelino Freitas (2)
(def. Zahir Raheem)29 Apr 2006 – 28 Apr 20070
Juan Díaz28 Apr 2007 – 8 Mar 20081
Nate Campbell8 Mar 2008 – 13 Feb 20090
Juan Manuel Márquez
(def. Juan Díaz)28 Feb 2009 – 26 Jan 20122
Ricky Burns
(interim champion promoted)26 Jan 2012 – 1 Mar 20144
Terence Crawford1 Mar 2014 – 5 Mar 20152
url-status=livework=Fox Sportsarchive-url= https://web.archive.org/web/20210824032344/https://amp.foxsports.com/stories/boxing/undefeated-terence-crawford-moves-up-for-junior-welterweight-title-shotarchive-date=24 August 2021access-date=24 August 2021}}}}
Terry Flanagan
(def. Jose Zepeda)11 Jul 2015 – 26 Oct 20175
Ray Beltrán
(def. Paulus Moses)16 Feb – 25 Aug 20180
José Pedraza25 Aug – 8 Dec 20180
Vasiliy Lomachenko8 Dec 2018 – Oct 20202
Teofimo Lopez17 Oct 2020 – 27 Nov 20210
George Kambosos Jr.27 Nov 2021 – 5 Jun 20220
Devin Haney5 Jun 2022 – 29 Nov 20232
Denys Berinchyk
(def. Emanuel Navarrete)18 May 2024 – 14 Feb 20250
Keyshawn Davis14 Feb – 6 Jun 20250
Abdullah Mason
(def. Sam Noakes)22 Nov 2025 – present0

Junior lightweight

No.NameReignDefenses1{{smallMolina was stripped the title after fighting for the IBF title.{{cite newslanguage=Spanishtitle=OMB desconoce a Juan Molina2345De La Hoya vacated the title to move up to lightweight.6Tuur retired as the WBO junior lightweight world champion.7Jones lost his boxing license after a brain scan found an anomaly. The WBO vacated his title before Jones regained his license.89Freitas vacated the title to stay at lightweight.10Corrales vacated the title to move up to lightweight.1112{{smallBarrios was stripped of the title after failing to make weight the day before his scheduled bout against Joan Guzmán.{{cite newslast=Rafaelfirst=Dandate=14 September 2006title=Barrios can't make weight, loses junior lightweight belt13{{smallGuzmán vacated the title to move up to lightweight after continued difficulties negotiating a bout against mandatory challenger Alex Arthur.{{cite newslast=Rafaelfirst=Dandate=14 May 2008title=Guzman gives up junior lightweight belt14151617Burns vacated the title to move up to lightweight.18Broner was stripped of the title after failing to make weight the day before his scheduled bout against mandatory challenger Vicente Escobedo.1920{{smallGarcia vacates the title to move up to junior welterweight.{{cite newslast=Rafaelfirst=Dandate=14 October 2014title=Mikey Garcia targets 140 pounds212223Lomachenko vacated the title after moving up in weight and defeating Jorge Linares for the WBA lightweight world championship.242526Stevenson was stripped of the title after missing weight in his fight against mandatory challenger Robson Conceição.27
John John Molina
(def. Juan Laporte)29 Apr – 15 Oct 19890
work=El Nuevo Heraldlocation=Miami, Floridadate=15 October 1989access-date=4 July 2018via=Newspapers.comurl-access=subscription }}}}
Kamel Bou Ali
(def. Antonio Rivera)9 Dec 1989 – 21 Mar 19922
Daniel Londas21 Mar – 4 Sep 19920
Jimmi Bredahl4 Sep 1992 – 5 Mar 19941
Oscar De La Hoya5 Mar – 5 Jun 19941
Regilio Tuur
(def. Eugene Speed)24 Sep 1994 – 17 Jan 19976
Barry Jones
(def. Wilson Palacio)19 Dec 1997 – 19980
Anatoly Alexandrov
(def. Julien Lorcy)16 May 1998 – 7 Aug 19991
Acelino Freitas7 Aug 1999 – 18 Jan 200410
Diego Corrales
(def. Joel Casamayor)6 Mar – 18 Jun 20040
Mike Anchondo
(def. Pablo Chacón)15 Jul 2004 – 8 Apr 20050
Jorge Rodrigo Barrios8 Apr 2005 – 15 Sep 20062
url-status=livework=ESPNarchive-url=https://web.archive.org/web/20190704205027/https://www.espn.com/sports/boxing/news/story?id=2589566archive-date=4 July 2019access-date=4 July 2019}}}}
Joan Guzmán
(def. Jorge Rodrigo Barrios)16 Sep 2006 – 14 May 20082
url-status=livework=ESPNarchive-url=https://web.archive.org/web/20190704224321/https://www.espn.com/sports/boxing/news/story?id=3395957archive-date=4 July 2019access-date=4 July 2019}}}}
Alex Arthur
(interim champion promoted)14 May – 9 Sep 20080
Nicky Cook9 Sep 2008 – 14 Mar 20090
Román Martínez14 Mar 2009 – 4 Sep 20102
Ricky Burns4 Sep 2010 – 13 Sep 20113
Adrien Broner
(def. Vicente Martín Rodríguez)26 Nov 2011 – 20 Jul 20121
Román Martínez (2)
(def. Miguel Beltrán Jr.)15 Sep 2012 – 9 Nov 20132
Mikey Garcia9 Nov 2013 – 14 Oct 20141
url-status=livework=ESPNarchive-url=https://web.archive.org/web/20171211053340/https://www.espn.com/boxing/story/_/id/11706275/mikey-garcia-vacates-junior-lightweight-title-orlando-salido-elevated-full-championarchive-date=11 December 2017access-date=4 July 2019}}}}
Orlando Salido
(interim champion promoted)14 Oct 2014 – 11 Apr 20150
Román Martínez (3)11 Apr 2015 – 11 Jun 20161
Vasiliy Lomachenko11 Jun 2016 – 23 May 20184
Masayuki Ito
(def. Christopher Díaz)28 Jul 2018 – 25 May 20191
Jamel Herring25 May 2019 – 23 Oct 20213
Shakur Stevenson23 Oct 2021 – 22 Sep 20221
Emanuel Navarrete
(def. Liam Wilson)3 Feb 2023 – present4

Featherweight

No.NameReignDefenses123{{smallPaez vacates the title to move up to junior lightweight.{{cite newstitle=Stecca-Reyes fight scheduled for Jan. 26456Palacio was stripped of the title after failing a pre-fight medical examination due to testing positive for HIV.78Hamed vacated the title after HBO refused to approve mandatory challenger István Kovács as his opponent.910111213Harrison vacated the title after withdrawing from a bout against Nicky Cook because he could no longer make the featherweight limit.14Márquez vacated the title to stay at junior lightweight.15161718Garcia was stripped of the title after failing to make weight the day before his scheduled bout against Juan Manuel López.19{{smallSalido was stripped of the title after failing to make weight the day before his scheduled bout against Vasiliy Lomachenko.{{cite newslast=Rafaelfirst=Dandate=28 February 2014title=Orlando Salido stripped of world title20{{smallLomachenko vacated the title to stay at junior lightweight.{{cite newslast=Coppingerfirst=Mikedate=21 July 2016title=Vasyl Lomachenko will stay at 130 pounds, vacates featherweight title21Valdez vacates the title to move up to junior lightweight.22Stevenson vacated the title to move up to junior lightweight.23Navarrete vacated the title to stay at junior lightweight.2425
Maurizio Stecca
(def. Pedro Nolasco)28 Jan – 11 Nov 19891
Louie Espinoza11 Nov 1989 – 7 Apr 19900
Jorge Páez7 Apr 1990 – 16 Jan 19911
work=Hartford Courantlocation=Hartford, Connecticutdate=17 January 1991access-date=14 November 2021via=Newspapers.comurl-access=subscription }}}}
Maurizio Stecca (2)
(def. Armando Juan Reyes)26 Jan 1991 – 16 Feb 19922
Colin McMillan16 Feb – 26 Sep 19920
Rubén Darío Palacio26 Sep 1992 – 16 Apr 19930
Steve Robinson
(def. John Davison)17 Apr 1993 – 30 Sep 19957
Naseem Hamed30 Sep 1995 – 5 Oct 200015
István Kovács
(def. Antonio Díaz)27 Jan – 16 Jun 20010
Pablo Chacón16 Jun 2001 – 19 Oct 20022
Scott Harrison19 Oct 2002 – 12 Jul 20032
Manuel Medina12 Jul – 29 Nov 20030
Scott Harrison (2)29 Nov 2003 – 6 Dec 20066
Juan Manuel Márquez
(interim champion promoted)6 Dec 2006 – 3 Apr 20070
Steven Luevano
(def. Nicky Cook)14 Jul 2007 – 23 Jan 20105
Juan Manuel López23 Jan 2010 – 16 Apr 20111
Orlando Salido16 Apr 2011 – 19 Jan 20132
Mikey Garcia19 Jan – 14 Jun 20130
Orlando Salido (2)
(def. Orlando Cruz)12 Oct 2013 – 28 Feb 20140
url-status=livework=ESPNarchive-url=https://web.archive.org/web/20190704203422/https://www.espn.com/boxing/story/_/id/10534021/orlando-salido-fails-make-weight-stripped-world-titlearchive-date=4 July 2019access-date=4 July 2019}}}}
Vasiliy Lomachenko
(def. Gary Russell Jr.)21 Jun 2014 – 21 Jul 20163
url-status=livework=USA Todayarchive-url=https://web.archive.org/web/20190704203950/https://www.usatoday.com/story/sports/boxing/2016/07/21/vasyl-lomachenko-will-stay-at-130-pounds-vacates-featherweight-title/99722356/archive-date=4 July 2019access-date=4 July 2019}}}}
Óscar Valdez
(def. Matías Rueda)23 Jul 2016 – 2 Aug 20196
Shakur Stevenson
(def. Joet Gonzalez)26 Oct 2019 – 7 Jul 20200
Emanuel Navarrete
(def. Ruben Villa)9 Oct 2020 – 9 Feb 20233
Robeisy Ramírez
(def. Isaac Dogboe)1 Apr – 9 Dec 20231
Rafael Espinoza9 Dec 2023 – present3

Junior featherweight

No.NameReignDefenses123456789{{smallMcKinney 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.{{cite newstitle=Hamed's bout knocked out1011{{smallMorales 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.{{cite newstitle=Barrera restituidolanguage=Spanish12Barrera vacated the title to stay at featherweight.13Sánchez is stripped of the title for failing a pre-fight eye test.14Guzmán vacated the title to move up to featherweight.1516López vacated the title to move up to featherweight.1718Arce vacated the title to move down to bantamweight.1920Rigondeaux was stripped of the title due to inactivity.21222324Navarrete vacated the title to move up to featherweight.252627
Kenny Mitchell
(def. Julio Gervacio)29 Apr – 9 Dec 19891
Valerio Nati9 Dec 1989 – 12 May 19900
Orlando Fernandez12 May 1990 – 24 May 19910
Jesse Benavides24 May 1991 – 15 Oct 19921
Duke McKenzie15 Oct 1992 – 9 Jun 19930
Daniel Jiménez9 Jun 1993 – 31 Mar 19954
Marco Antonio Barrera31 Mar 1995 – 22 Nov 19968
Junior Jones22 Nov 1996 – 18 Apr 19971
Kennedy McKinney18 April 1997 – 30 May 19980
work=The Guardianlocation=London, Greater Londondate=30 May 1998access-date=15 November 2021via=Newspapers.comurl-access=subscription }}}}
Marco Antonio Barrera (2)
(def. Richie Wenton)31 Oct 1998 – 19 Feb 20002
Erik Morales19 Feb – 24 Feb 20000
work=El Nuevo Heraldlocation=Miami, Floridadate=25 February 2000access-date=14 November 2021via=Newspapers.comurl-access=subscription }}}}
Marco Antonio Barrera (3)
(reinstated)24 Feb 2000 – 1 Jun 20012
Agapito Sánchez
(def. Jorge Monsalvo)23 Jun 2001 – 13 Aug 20021
Joan Guzmán
(def. Fabio Daniel Oliva)17 Aug 2002 – 4 Jul 20052
Daniel Ponce de León
(def. Sod Looknongyangtoy)29 Oct 2005 – 7 Jun 20086
Juan Manuel López7 Jun 2008 – Jan 20105
Wilfredo Vázquez Jr.
(def. Marvin Sonsona)27 Feb 2010 –7 May 20112
Jorge Arce7 May – 18 Nov 20111
Nonito Donaire
(def. Wilfredo Vázquez Jr.)4 Feb 2012 – 13 Apr 20133
Guillermo Rigondeaux13 Apr 2013 – 28 Oct 20153
Nonito Donaire (2)
(def. César Juárez)11 Dec 2015 – 5 Nov 20161
Jessie Magdaleno5 Nov 2016 – 28 Apr 20181
Isaac Dogboe28 Apr – 8 Dec 20181
Emanuel Navarrete8 Dec 2018 – 11 Jul 20205
Angelo Leo
(def. Tramaine Williams)1 Aug 2020 – 23 Jan 20210
Stephen Fulton23 Jan 2021 – 25 Jul 20232
Naoya Inoue25 Jul 2023 – present7

Bantamweight

No.NameReignDefenses1{{smallContreras vacated the title in order to challenge Luisito Espinosa for the WBA title.{{cite newstitle=South Texas Boxer sets sights on WBO bantamweight crown234567Regan vacated the title due to health problems.89Tapia vacated the title to fight Paulie Ayala at junior featherweight.1011121314Peñalosa was stripped of the title after moving up and challenging WBO junior featherweight champion Juan Manuel López.1516Donaire vacates the title to move up to junior featherweight.17{{smallArce intends to stay at junior featherweight. The title is vacated on WBO's August 2012 rankings.{{cite web181920Kameda'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. As a result, Kameda relinquished his title.2122Tapales was stripped of the title after failing to make weight the day before his bout against Shohei Omori.2324Casimero 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.2526Inoue vacated the title in order to move up to junior featherweight.272829
Israel Contreras
(def. Maurizio Lupino)3 Feb 1989 – 20 Feb 19911
work=Tyler Morning Telegraphlocation=Tyler, Texasdate=20 February 1991access-date=15 November 2021via=Newspapers.comurl-access=subscription}}}}
Gaby Canizales
(def. Miguel Lora)12 Mar – 30 Jun 19910
Duke McKenzie30 Jun 1991 – 13 May 19922
Rafael del Valle13 May 1992 – 30 Jul 19942
Alfred Kotey30 Jul 1994 – 21 Oct 19952
Daniel Jiménez21 Oct 1995 – 26 Apr 19961
Robbie Regan26 Apr 1996 – 18 Jul 19970
Jorge Eliécer Julio
(def. Oscar Maldonado)28 Jul 1997 – 8 Jan 20003
Johnny Tapia8 Jan – 16 Aug 20001
Mauricio Martínez
(def. Lester Fuentes)4 Sep 2000 – 15 Mar 20021
Cruz Carbajal15 Mar 2002 – 7 May 20042
Ratanachai Sor Vorapin7 May 2004 – 29 Oct 20051
Jhonny González29 Oct 2005 – 11 Aug 20071
Gerry Peñalosa11 Aug 2007 – 25 Apr 20091
Fernando Montiel
(interim champion promoted)25 Apr 2009 – 19 Feb 20112
Nonito Donaire19 Feb – 22 Oct 20111
Jorge Arce
(def. Angky Angkotta)26 Nov 2011 – 15 Aug 20120
url=https://www.wboboxing.com/wp-content/pdf/WBO_Ranking_as_of_Aug_2012.pdftitle=Rankings as of Aug. 15, 2012publisher=WBOaccess-date=28 September 2021}}}}
Pungluang Sor Singyu
(def. A. J. Banal)20 Oct 2012 – 2 Mar 20130
Paulus Ambunda2 Mar – 1 Aug 20130
Tomoki Kameda1 Aug 2013 – 23 Apr 20153
Pungluang Sor Singyu (2)
(def. Ryo Akaho)8 Aug 2015 – 27 Jul 20161
Marlon Tapales27 Jul 2016 – 22 Apr 20170
Zolani Tete
(interim champion promoted)23 Apr 2017 – 30 Nov 20193
John Riel Casimero30 Nov 2019 – 3 May 20222
Paul Butler
(interim champion promoted)3 May – 13 Dec 20220
Naoya Inoue13 Dec 2022 – 13 Jan 20230
Jason Moloney
(def. Vincent Astrolabio)13 May 2023 – 6 May 20241
Yoshiki Takei6 May 2024 – 14 Sep 20252
Christian Medina14 Sep 2025 – present0

Junior bantamweight

No.NameReignDefenses123{{smallBredahl was stripped of the title.{{cite newstitle=Comeback Kid claims NABF title4Tapia vacates the title to move up to bantamweight.56789101112{{smallMontiel reportedly was open in fighting Vic Darchinyan for the undisputed championship however,{{cite newslast=Vesterfirst=Markdate=9 February 2009title=Fernando Montiel pushing to unify with Vic Darchinyan1314{{smallSonsona was stripped of the title after failing to make weight on the day of his bout against Alejandro Hernández.{{cite newslast=Christfirst=Scottdate=21 November 2009title=Marvin Sonsona drops title on the scales in Ontario15Arce vacates his title to move up to bantamweight.1617{{smallInoue vacates the title to move up to bantamweight.{{cite newsauthor=date=6 March 2018title= 井上尚弥、３階級制覇挑戦 ５月、王者マクドネルと18Nietes vacates the title to pursue a career-defining fight.19Ioka vacates the title to pursue a rematch with Joshua Franco.20Nakatani vacates the title to move up to bantamweight.212223
José Ruíz Matos
(def. Bebis Rojas)29 Apr 1989 – 22 Feb 19924
José Quirino22 Feb – 4 Sep 19920
Johnny Bredahl4 Sep 1992 – 16 Jul 19943
work=Albuquerque Journal Telegraphlocation=Albuquerque, New Mexicodate=16 July 1994access-date=18 November 2021via=Newspapers.comurl-access=subscription}}}}
Johnny Tapia
(def. Henry Martínez)14 Oct 1994 – Dec 199813
Victor Godoi
(interim champion promoted)Dec 1998 – 7 Jun 19990
Diego Morales7 Jun – 20 Nov 19991
Adonis Rivas20 Nov 1999 – 16 Jun 20012
Pedro Alcázar16 Jun 2001 – 22 Jun 20021
Fernando Montiel22 Jun 2002 – 16 Aug 20031
Mark Johnson16 Aug 2003 – 25 Sep 20041
Iván Hernández25 Sep 2004 – 9 Apr 20050
Fernando Montiel (2)9 Apr 2005 – 10 Feb 20096
url-status=livework=Boxingscenearchive-url=https://archive.today/20211118132559/https://www.boxingscene.com/fernando-montiel-pushing-unify-with-vic-darchinyan--18318archive-date=18 November 2021access-date=18 November 2021}} on the following day, Montiel's title was reportedly vacated.{{cite newslast=Nathanielszfirst=Ronniedate=10 February 2009title=Juanma Lopez-Penalosa Fight Confirmed by Gomezurl-status=livework=Boxingscenearchive-url=https://archive.today/20120722092519/http://www.boxingscene.com/juanma-lopez-penalosa-fight-confirmed-by-gomez--18327archive-date=22 July 2012access-date=18 November 2021}}}}
José López
(def. Pramuansak Posuwan)28 Mar – 4 Sep 20090
Marvin Sonsona4 Sep – 20 Nov 20090
url-status=livework=Bad Left Hookarchive-url=https://web.archive.org/web/20190706061211/https://www.badlefthook.com/2009/11/21/1167922/marvin-sonsona-drops-title-on-thearchive-date=6 July 2019access-date=5 July 2019}}}}
Jorge Arce
(def. Angky Angkotta)30 Jan – Apr 20100
Omar Narváez
(def. Everth Briceño)15 May 2010 – 30 Dec 201411
Naoya Inoue30 Dec 2014 – 6 Mar 20187
url-status=livework=Sankei Shimbunlanguage=Japanesearchive-url= https://web.archive.org/web/20210824030531/https://www.sankei.com/smp/photo/story/news/180306/sty1803060008-s.htmlarchive-date=24 August 2021access-date=24 August 2021}}}}
Donnie Nietes
(def. Kazuto Ioka)31 Dec 2018 – 28 Feb 20190
Kazuto Ioka
(def. Aston Palicte)19 Jun 2019 – 15 Feb 20236
Junto Nakatani
(def. Andrew Moloney)20 May – 13 Dec 20231
Kosei Tanaka
(def. Christian Bacasegua)24 Feb – 14 Oct 20240
Phumelele Cafu14 Oct 2024 – 19 Jul 20250
Jesse Rodriguez19 Jul 2025 – present1

Flyweight

No.NameReignDefenses1Álvarez vacates the title due to lack of interest in it.2345678Bueno vacates the title due to an ankle injury thus preventing him from defending the title.910Montiel's title was vacated when he stepped on the ring against Pedro Alcázar for his WBO junior bantamweight title.1112Narváez vacates the title to move up to junior bantamweight.131415Estrada vacates the title to move up to junior bantamweight.161718{{smallTanaka vacates the title to move up to junior bantamweight.{{cite newsauthor=date=4 February 2020title=田中恒成がフライ級王座返上 2020年は4階級制覇へ19{{smallNakatani vacates the title to move up to junior bantamweight.{{cite newsauthor=Boxing Bob Newmandate=27 October 2022title=WBO 35th Annual Convention Final Meetings20Rodriguez vacates the title to move up to junior bantamweight.21
Elvis Álvarez
(def. Miguel Mercedes)3 Mar 1989 – Mar 19900
Isidro Pérez
(def. Angel Rosario)18 Aug 1990 – 18 Mar 19922
Pat Clinton18 Mar 1992 – 15 May 19931
Jacob Matlala15 May 1993 – 11 Feb 19953
Alberto Jiménez11 Feb 1995 – 13 Dec 19965
Carlos Gabriel Salazar13 Dec 1996 – 14 Aug 19985
Rubén Sánchez León14 Aug 1998 – 23 Apr 19991
José Antonio López Bueno23 Apr 1999 – 19991
Isidro García
(def. José López)18 Dec 1999 – 15 Dec 20001
Fernando Montiel15 Dec 2000 – 22 Jun 20023
Adonis Rivas
(interim champion promoted)22 Jun – 13 Jul 20020
Omar Narváez13 Jul 2002 – 14 May 201016
Julio César Miranda
(def. Richie Mepranum)12 Jun 2010 – 16 Jul 20113
Brian Viloria16 Jul 2011 – 6 Apr 20133
Juan Francisco Estrada6 Apr 2013 – 14 Sep 20165
Zou Shiming
(def. Prasitsak Phaprom)5 Nov 2016 – 28 Jul 20170
Sho Kimura28 Jul 2017 – 24 Sep 20182
Kosei Tanaka24 Sep 2018 – 31 Jan 20203
url-status=livelanguage=Japanesework=Boxingnewsarchive-url= https://web.archive.org/web/20201129024409/https://boxingnews.jp/news/72776/archive-date=29 November 2020access-date=3 August 2021}}}}
Junto Nakatani
(def. Giemel Magramo)6 Nov 2020 – 27 Oct 20222
url-status=livework=WBOarchive-url= https://web.archive.org/web/20221029210917/https://wboboxing.com/boxing-news/wbo-convention-ratings-committee/archive-date=29 October 2022access-date=29 October 2022}}}}
Jesse Rodriguez
(def. Christian Gonzalez)8 Apr 2023 – 29 Mar 20241
Anthony Olascuaga
(def. Riku Kano)20 Jul 2024 – present4

Junior flyweight

No.NameReignDefenses1de Jesús was stripped of the title after failing to defend it in a specific time period.23Carbajal is stripped of the title for failing to defend the title.45Matlala vacates the title to fight Michael Carbajal rather than defend his title.678910Carbajal retires.11Makepula vacates the title to move up to flyweight.12131415{{smallSegura vacates the title to move up to flyweight.{{cite newslast=Rafaelfirst=Dandate=22 April 2011title=Klitschko, Adamek have venue for fight161718Nietes vacates the title to move up to flyweight.19{{smallTanaka vacates the title to move up to flyweight.{{cite newslast=Koizumifirst=Joedate=30 November 2017title= WBO 108lb champ Tanaka renounces his belt202122{{smallGonzález vacates the title to move up to flyweight.{{cite newslast=Donovanfirst=Jakedate=19 June 2024title= Jonathan 'Bomba' Gonzales relinquishes WBO 108-pound title, will campaign at flyweight2324
José de Jesús
(def. Fernando Martínez)19 May 1989 – Mar 19923
Josué Camacho
(def. Eddie Vallejo)31 Jul 1992 – 15 Jul 19941
Michael Carbajal15 Jul – 12 Nov 19940
Paul Weir
(def. Paul Oulden)23 Nov 1994 – 18 Nov 19951
Jacob Matlala18 Nov 1995 – 19972
Jesús Chong
(def. Eric Griffin)31 May – 25 Aug 19970
Melchor Cob Castro25 Aug 1997 – 17 Jan 19980
Juan Domingo Córdoba17 Jan – 5 Dec 19981
Jorge Arce5 Dec 1998 – 31 Jul 19991
Michael Carbajal (2)31 Jul – Aug 19990
Masibulele Makepula
(def. Jacob Matlala)19 Feb 2000 – 20000
Nelson Dieppa
(def. Andy Tabanas)14 Apr 2001 – 30 Apr 20055
Hugo Cázares30 Apr 2005 – 25 Aug 20074
Iván Calderón25 Aug 2007 – 28 Aug 20106
Giovani Segura28 Aug 2010 – 22 Apr 20111
url-status=livework=ESPNarchive-url= https://web.archive.org/web/20160908233751/https://www.espn.com/sports/boxing/columns/story?columnist=rafael_dan&id=6407521archive-date=8 September 2016access-date=24 August 2021}}}}
Jesús Géles
(interim champion promoted)22 Apr – 30 Apr 20110
Ramón García Hirales30 Apr – 8 Oct 20110
Donnie Nietes8 Oct 2011 – 3 Aug 20169
Kosei Tanaka
(def. Moisés Fuentes)31 Dec 2016 – 30 Nov 20172
url-status=livelanguage=Japanesework=Fightnewsarchive-url= https://web.archive.org/web/20210428090654/https://fightnews.com/wbo-108lb-champ-tanaka-renounces-belt/9612archive-date=28 April 2021access-date=3 August 2021}}}}
Ángel Acosta
(def. Juan Alejo)2 Dec 2017 – 21 Jun 20193
Elwin Soto21 Jun 2019 – 16 Oct 20213
Jonathan González16 Oct 2021 – 19 Jun 20243
url-status=livework=The Ringarchive-url= https://web.archive.org/web/20240620201302/https://www.ringtv.com/674322-jonathan-bomba-gonzalez-relinquishes-wbo-108-pound-title-will-campaign-at-flyweight/archive-date=20 June 2024access-date=10 August 2024}}}}
Shokichi Iwata
(def. Jairo Noriega)13 Oct 2024 – 13 Mar 20250
René Santiago13 Mar 2025 – present1

Mini flyweight

No.NameReignDefenses1Torres vacates the title.2Weir vacates the title to move up in weight and challenge Josué Camacho for a junior flyweight world title.44{{smallAfter 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".{{cite newstitle=Accomplished boxer gives WBO belt to dad, loses title56Guardia vacates the title to move up to junior flyweight.789Calderón's title is vacated when he won the WBO junior flyweight title.10Nietes vacates the title to move up in weight and challenge Ramón García Hirales for the WBO junior flyweight title.1112Fuentes vacates the title to move up to junior flyweight.1314{{smallRodríguez intends to move in weight class. The title is vacated on WBO's December 2014 rankings.{{cite web15Takayama vacates his WBO title to skip his mandatory challenger in favor of a fight with former champion Fahlan Sakkreerin.16{{smallTanaka vacates the title to move up to junior flyweight.{{cite newsauthor=date=7 April 2016title=田中恒成がミニマム級王座返上、年内2階級制覇へ17{{smallTakayama retired from professional boxing in order to concentrate on training for the 2020 Summer Olympics.{{cite newsauthor=date=3 April 2017title=高山、引退で五輪挑戦へ ＷＢＯミニマム級王者18192021222324
Rafael Torres
(def. Yamil Caraballo)30 Aug 1989 – 19931
Paul Weir
(def. Fernando Martínez)15 May – 16 Dec 19931
Alex Sánchez
(def. Orlando Malone)22 Dec 1993 – 23 Aug 19976
Ricardo López23 Aug – Aug 19970
work=The Dispatchlocation=Moline, Illinoisdate=20 December 1997access-date=18 November 2021via=Newspapers.comurl-access=subscription}}}}
Eric Jamili
(def. Mickey Cantwell)19 Dec 1997 – 30 May 19980
Kermin Guardia30 May 1998 – 20013
Jorge Mata
(def. Reynaldo Frutos)29 Jun 2002 – 28 Mar 20031
Eduardo Ray Márquez28 Mar – 3 May 20030
Iván Calderón3 May 2003 – 25 Aug 200711
Donnie Nietes
(def. Pornsawan Porpramook)30 Sep 2007 – 28 Feb 20114
Raúl García
(interim champion promoted)28 Feb – 27 Aug 20111
Moisés Fuentes27 Aug 2011 – 19 Apr 20132
Merlito Sabillo
(interim champion promoted)19 Apr 2013 – 22 Mar 20142
Francisco Rodríguez Jr.22 Mar – 15 Dec 20141
url=http://www.wboboxing.com/wp-content/uploads/2014/12/WBO-Ranking-as-of-Dec-Sheet11.pdftitle=Rankings as of Dec. 15, 2014publisher=WBOaccess-date=28 September 2021}}}}
Katsunari Takayama
(def. Go Odaira)31 Dec 2014 – 3 Mar 20150
Kosei Tanaka
(def. Julián Yedras)30 May 2015 – 7 Apr 20161
url-status=livelanguage=Japanesework=Boxingnewsarchive-url= https://web.archive.org/web/20201022061405/http://boxingnews.jp/news/36244/archive-date=22 October 2020access-date=3 August 2021}}}}
Katsunari Takayama (2)
(def. Riku Kano)20 Aug 2016 – 3 Apr 20170
url-status=livelanguage=Japanesework=Sankei Shimbunarchive-url= https://web.archive.org/web/20210821015226/https://www.sankei.com/smp/photo/daily/news/170403/dly1704030015-s.htmlarchive-date=21 August 2021access-date=21 August 2021}} Interim champion Fukura is later promoted to full champion.{{cite newsauthor=date=14 April 2017title=福原辰弥がWBO正規王者に昇格へ、高山勝成の引退でurl-status=livelanguage=Japanesework=Boxingnewsarchive-url= https://web.archive.org/web/20180703052125/http://boxingnews.jp/news/46599/archive-date=3 July 2018access-date=21 August 2021}}}}
Tatsuya Fukuhara
(interim champion promoted)14 Apr – 27 Aug 20170
Ryuya Yamanaka27 Aug 2017 – 13 Jul 20181
Vic Saludar13 Jul 2018 – 24 Aug 20191
Wilfredo Méndez24 Aug 2019 – 14 Dec 20212
Masataka Taniguchi14 Dec 2021 – 6 Jan 20231
Melvin Jerusalem6 Jan – 27 May 20230
Oscar Collazo27 May 2023 – present6

References

References

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  22. Rafael, Dan. (11 October 2018). "Billy Joe Saunders vacates 160-pound title after positive doping test". ESPN.
  23. WBO. (26 August 2022). "WBO CHAMPIONSHIP COMMITTEE RESOLUTION: In the Matter of the WBO Middleweight Division". WBO.
  24. Plunkett, Bill. (27 February 1996). "British boxer backs out, WBO strips belt". The Desert Sun.
  25. (27 November 2001). "WBO title vacant or not?". Fightnews.
  26. Rosenburg, David. (7 October 2011). "Dzinziruk Gets Stripped, Baysangurov The New Champ". Boxingscene.
  27. Jay, Phil. (22 July 2013). "Baysangurov stripped of WBO belt, Andrade in line for vacant title". World Boxing News.
  28. Rafael, Dan. (11 October 2018). "WBO strips Demetrius Andrade of junior middleweight title due to inactivity". ESPN.
  29. Themistode, Hans. (23 November 2019). "Jamie Munguia Vacates Title To Face Gary O'Sullivan in Middleweight Debut". Boxing Insider.
  30. Naghten, Tom. (3 August 2023). "Jermell Charlo to be stripped of WBO super-welterweight title, Tim Tszyu to be elevated to champion". The Sporting News.
  31. Ominiyi, Mosope. (2 May 2025). "Sebastian Fundora stripped of WBO junior-middleweight world title, belt now vacant". Ring Magazine.
  32. Olivieri, Gustavo. (2 May 2025). "Re: Sebastian Fundora WBO Championship Committee has unanimously voted to strip Fundora of his WBO Jr. Middleweight (154 lbs.) title, effective immediately.".
  33. . (14 October 1993). ["WBO title stripped from flu-stricken boxer"](https://www.newspapers.com/image/485101655/). *Calgary Herald*.
  34. Katz, Michael. (21 November 1996). "Make room for Oscar". Daily News.
  35. Rafael, Dan. (14 November 2008). "Ambitious Williams vacates welterweight belt". ESPN.
  36. Rafael, Dan. (6 July 2015). "Floyd Mayweather Jr. stripped of WBO welterweight title". ESPN.
  37. Rafael, Dan. (9 February 2016). "Unable to fulfill mandatory defense, Timothy Bradley Jr. vacates title". ESPN.
  38. (12 August 2024). "Resolution: In the Matter of the WBO Welterweight Division". WBO.
  39. Donovan, Jake. (12 August 2024). "Terence Crawford vacates WBO welterweight title; Brian Norman Jr. elevated to full titlist". The Ring.
  40. Kawakami, Tim. (2 September 1994). "Padilla's Retirement Expected Over Clot". Los Angeles Times.
  41. Iole, Kevin. (1 July 2001). "Corley Knocks Out Flores In 1st Round to Win Title". The Washington Post.
  42. (18 June 2004). "Jones Jr. eyes return!". Fightnews.
  43. (27 October 2006). "Cotto gives up WBO 140lb title!". Fightnews.
  44. Rafael, Dan. (27 June 2012). "Timothy Bradley Jr. stays at 147". ESPN.
  45. Rafael, Dan. (3 September 2013). "Alvarado to be elevated to full titlist". ESPN.
  46. Christ, Scott. (2 November 2014). "Chris Algieri forced to vacate 140-pound belt for Pacquiao fight". Bad Left Hook.
  47. Rafael, Dan. (30 October 2017). "Terence Crawford moving up to fight in 147-pound welterweight division". ESPN.
  48. Idec, Keith. (14 January 2006). "Corrales-Castillo fight postponed". The Herald-News.
  49. Rafael, Dan. (13 February 2009). "Campbell can't make weight for Funeka". ESPN.
  50. Gilfoid, Scott. (26 January 2012). "Ricky Burns handed WBO lightweight title after Juan Manuel Marquez stripped of title". Boxingnews24.
  51. . (27 October 2017). ["Terry Flanagan vacates WBO title, heads to 140 as #1 contender / Terence Crawford mandatory at 147"](https://www.worldboxingnews.com/flanagan-terence-crawford/). *World Boxing News*.
  52. Coppinger, Mike. (29 November 2023). "Undisputed lightweight champion Devin Haney to vacate titles". ESPN.
  53. Hale, Andreas. (6 June 2025). "Keyshawn Davis 4.3 pounds over, loses belt ahead of title defense". ESPN.
  54. . (5 June 1994). ["Something's fishy with the rating system"](https://www.newspapers.com/newspage/440502082/). *The Boston Globe*.
  55. . (17 January 1997). ["Douglas schedules 3rd bout in comeback"](https://www.newspapers.com/image/234395396/). *The Orlando Sentinel*.
  56. Robb, Sharon. (18 January 2004). "Warriors Growing". Sun-Sentinel.
  57. Hughes, Robert. (18 June 2004). "Anchondo vs Rees official!". Fightnews.
  58. Gilfoid, Scort. (13 September 2011). "Burns Vacates WBO Title, Will Fight Katsidis For Vacant Lightweight Belt On November 12th". Boxingnews24.
  59. Rafael, Dan. (20 July 2012). "Adrien Broner stripped of title". ESPN.
  60. Rafael, Dan. (25 May 2018). "Vasiliy Lomachenko vacates jr. lightweight title; Aug. 25 return off". ESPN.
  61. Coppinger, Mike. (22 September 2022). "Shakur Stevenson misses weight, stripped of 130-pound titles ahead of Friday's fight vs. Robson Conceicao". ESPN.
  62. . (16 April 1993). ["WBO champ stripped of crown after testing positive for AIDS virus"](https://www.newspapers.com/image/477144249/). *Elko Daily Free Press*.
  63. . (9 October 2000). ["Hamed resigns WBO title"](http://news.bbc.co.uk/sport2/hi/other_sports/964277.stm). *BBC Sport*.
  64. . (6 December 2006). ["Harrison pulls out of featherweight fight vs. Cook"](https://www.espn.com/sports/boxing/news/story?id=2689021). *ESPN*.
  65. . (3 April 2007). ["Luevano-Cook clash planned"](http://www.fightnews.com/page2.shtml). *Fightnews*.
  66. . (15 June 2013). ["Garcia stripped of title for failing to make weight"](https://www.usatoday.com/story/sports/boxing/2013/06/15/featherweight-champion-mikey-garcia-fails-to-make-weight/2426289/). *USA Today*.
  67. Flessel, Dean. (2 August 2019). "Oscar Valdez Vacates WBO Title, Shakur Stevenson Will Fight For Belt". Boxingnews24.
  68. Donovan, Jake. (12 July 2020). "Stevenson Officially Vacates WBO 126 Title, Installed As Number One Contender At 130". Boxingscene.
  69. Donovan, Jake. (9 February 2023). "Emanuel Navarrete Vacates WBO 126-Pound Title, Now At Stake For Ramirez-Dogboe Clash". Boxingscene.
  70. Mike Coppinger. (10 February 2023). "Emanuel Navarrete has formally vacated his WBO featherweight title, the organization announced on Thursday. This means Robeisy Ramirez and Isaac Dogboe will meet for the vacant title on April 1.".
  71. Rafael, Dan. (1 June 2001). "Barrera, Morales talking rematch". USA Today.
  72. Pérez, Jorge. (14 August 2002). "Destronan a Agapito los médicos". WBA.
  73. Christ, Scott. (6 July 2005). "Valcarcel to file complaint!". Fightnews.
  74. Christ, Scott. (18 November 2011). "Jorge Arce Vacates Title, Donaire vs Vazquez Could Happen For WBO Belt at 122". Bad Left Hook.
  75. Rafael, Dan. (28 October 2015). "WBO strips Guillermo Rigondeaux of a 122-pound belt". ESPN.
  76. Salazar, Francisco. (12 July 2020). "Emanuel Navarrete vacates WBO 122-pound title, will be named mandatory at 126". The Ring.
  77. (18 July 1997). "Futch says Tapia isn't just another in the crowd". The Fresno Bee.
  78. (16 August 2000). "Warren announces 4 cards!". Fightnews.
  79. Nathanielsz, Ronnie. (18 May 2009). "Penalosa Lands a Number 2 Spot in The WBO Rankings". Boxingscene.
  80. Rafael, Dan. (23 October 2011). "Donaire wins fight, but no new fans". ESPN.
  81. Rivera, Miguel. (21 April 2015). "WBO Shoots Down Kameda-McDonnell Unification". Boxingscene.
  82. Rivera, Miguel. (23 April 2015). "Tomoki Kameda Vacates WBO Belt, Focused on McDonnell". Boxingscene.
  83. Songalia, Ryan. (22 April 2017). "'Dehydrated' Tapales loses WBO bantamweight title on scales". The Ring.
  84. Songalia, Ryan. (3 May 2022). "WBO strips John Riel Casimero of bantamweight title, elevates Paul Butler to champion". The Ring.
  85. Songalia, Ryan. (13 January 2023). "Naoya Inoue vacates undisputed bantamweight championship, will move up to 122 pounds". The Ring.
  86. Pamintuan, Carlos. (1 March 2019). "Donnie Nietes vacates WBO title, seeks bigger fights". ESPN.
  87. (15 February 2023). "Kazuto Ioka vacates WBO world title to rematch WBA champion Franco". Yahoo.
  88. Wainwright, Anson. (13 December 2023). "Junto Nakatani drops WBO 115-pound belt, eyes move to bantamweight". The Ring.
  89. Sáenz, Ludo. (11 July 2002). "¡Paco Valcárcel revela planes de la OMB!". Boxing news.
  90. Nathanielsz, Ronnie. (14 May 2010). "Mepranum To Fight For Vacant WBO Flyweight Belt". Boxingscene.
  91. Rafael, Dan. (20 September 2016). "Juan Francisco Estrada vacates 2nd flyweight title, will move up in weight". ESPN.
  92. Donovan, Jake. (29 March 2024). "Jesse 'Bam' Rodriguez relinquishes IBF 112-pound belt; Angel Ayala-David Apolinario title fight ordered". The Ring.
  93. Songalia, Ryan. (3 August 2016). "Donnie Nietes vacates 108-pound belt, moves to flyweight". The Ring.
  94. . (16 December 1993). ["Weir gives up WBO title"](https://www.newspapers.com/image/97620264/). *Detroit Free Press*.
  95. Aznar, Edri. (28 February 2011). "Nietes chases another dream". Sunstar.
  96. Secuya, Dong. (19 April 2013). "WBO declares Merlito Sabillo as the new mini-flyweight champion". Philboxing.
  97. Secuya, Dong. (3 March 2015). "Katsunari Takayama vacates WBO title, will defend IBF belt on April 22nd as part of Ioka card!". Asianboxing.
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