List of WBO world champions

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.

Heavyweight

Name:	Date:	Location:	Defenses:
Francesco Damiani def. Johnny du Plooy	May 6, 1989	Syracuse, Italy	1
Ray Mercer	January 11, 1991	Atlantic City, New Jersey, United States	1
Title vacated	1991	Mercer's only defense was against Tommy Morrison on October 18, 1991 in Atlantic City, New Jersey. He gave up the title shortly after.
Michael Moorer def. Bert Cooper	May 15, 1992	Atlantic City, New Jersey, United States	0
Title vacated	February 2, 1993
Tommy Morrison def. George Foreman	June 7, 1993	Las Vegas, Nevada, United States	1
Michael Bentt	October 29, 1993	Tulsa, Oklahoma, United States	0
Herbie Hide	March 19, 1994	London, England	0
Riddick Bowe	March 11, 1995	Las Vegas, Nevada, United States	1
Title vacated	1995	Bowe vacated to pursue a rematch with Evander Holyfield. Bowe's only defense was against Jorge Luis González on June 17, 1995 in Las Vegas, Nevada.
Henry Akinwande def. Jeremy Williams	June 29, 1996	Indio, California, United States	2
Title vacated	February 17, 1997	Akinwande vacated the title in order to challenge for the WBC title. His last defense was against Scott Welch on January 11, 1997 in Nashville, Tennessee.
Herbie Hide (2) def. Tony Tucker	June 28, 1997	Norwich, England	2
Vitali Klitschko	June 26, 1999	London, England, United Kingdom	2
Chris Byrd	April 1, 2000	Berlin, Germany	0
Wladimir Klitschko	October 14, 2000	Cologne, Germany	5
Corrie Sanders	March 8, 2003	Hanover, Germany	0
Title vacated	2003	Sanders vacated to concentrate on a challenge for the WBC belt against Vitali Klitschko.
Lamon Brewster def. Wladimir Klitschko	April 10, 2004	Las Vegas, Nevada, United States	3
Siarhei Liakhovich	April 1, 2006	Cleveland, Ohio, United States	0
Shannon Briggs	November 4, 2006	Phoenix, Arizona, United States	0
Sultan Ibragimov	June 2, 2007	Atlantic City, New Jersey, United States	1
Wladimir Klitschko (2)	February 23, 2008	New York City, United States	14
Tyson Fury	November 28, 2015	Düsseldorf, Germany	0
Title vacated	October 11, 2016	Fury vacated after cancelling his rematch with Wladimir Klitschko for a second time, citing depression after a positive test for cocaine.
Joseph Parker def. Andy Ruiz	December 10, 2016	Auckland, New Zealand	2
Anthony Joshua	March 31, 2018	Cardiff, United Kingdom	1

Junior heavyweight

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

Name:	Date:	Location:	Defenses:
Boone Pultz def. Magne Havnå	December 3, 1989	Copenhagen, Denmark	0
Magne Havnå	May 17, 1990	Aars, Denmark	2
Title vacated	1991	Havnå's last defense was against Tyrone Booze on February 15, 1991 in Randers, Denmark.
Tyrone Booze def. Derek Angol	July 25, 1992	Manchester, England	1
Markus Bott	February 13, 1993	Hamburg, Germany	0
Nestor Hipolito Giovannini	June 26, 1993	Hamburg, Germany	1
Dariusz Michalczewski	December 17, 1994	Hamburg, Germany	0
Title vacated	1995	Michalczewski vacated the title in favor of the WBO Light Heavyweight title, which he already held.
Ralf Rocchigiani def. Carl Thompson	June 10, 1995	Manchester, England, United Kingdom	6
Carl Thompson	October 4, 1997	Hanover, Germany	2
Johnny Nelson	March 27, 1999	Derby, England	13
Title vacated	2006	Title vacated when Nelson retired. Last defense on November 26, 2005 against Vincenzo Cantalore
Enzo Maccarinelli Interim champ promoted	July 8, 2006	Cardiff, Wales	4
David Haye	March 8, 2008	London, England	0
Title vacated	2008	Title vacated when Haye decided to move up to Heavyweight.
Victor Emilio Ramírez Interim champ promoted	February 2009	N/A	1
Marco Huck	December 5, 2009	Ludwigsburg, Germany	13
Krzysztof Głowacki	August 14, 2015	Newark, United States	1
Oleksandr Usyk current champion	September 17, 2016	Gdansk, Poland	5

Light heavyweight

Name:	Date:	Location:	Defenses:
Michael Moorer def. Ramzi Hassan	December 3, 1988	Brook Park, Ohio, United States	9
Title vacated	1991	Moorer vacated the title in order to move up to Heavyweight. His last defense was against Danny Stonewalker on December 15, 1990 at Pittsburgh, Pennsylvania
Leeonzer Barber def. Tom Collins	May 9, 1991	Leeds, England	4
Dariusz Michalczewski	September 10, 1994	Hamburg, Germany	23
Julio César González	October 10, 2003	Hamburg, Germany	0
Zsolt Erdei	January 17, 2004	Karlsruhe, Germany	11
Title vacated	November 13, 2009	Erdei vacated the title in order to move up to Cruiserweight. His last defense was against Yuriy Barashian on January 10, 2009 at Magdeburg, Germany
Jürgen Brähmer interim champ promoted	November 13, 2009	N/A	2
Title stripped	May 19, 2011	Brähmer was stripped of the title after withdrawing from a bout for the title against Nathan Cleverly citing eye injury. His last defense was against Mariano Nicolas Plotinsky on April 24, 2010 at Alsterdorf, Germany
Nathan Cleverly interim champ promoted	May 19, 2011	N/A	5
Sergey Kovalev	August 18, 2013	Cardiff, Wales	8
Andre Ward	November 19, 2016	Las Vegas, United States	1
Title vacated	September 21, 2017	Ward announced retirement and vacated his 3 titles. His last defense was against Sergey Kovalev on June 6, 2017 at Las Vegas, USA
Sergey Kovalev def. Vyacheslav Shabranskyy	November 25, 2017	Madison Square Garden, New York, United States	1
Eleider Álvarez	August 4, 2018	Hard Rock Hotel & Casino, Atlantic City, United States	0

Super middleweight

Name:	Date:	Location:	Defenses:
Thomas Hearns def. James Kinchen	November 4, 1988	Las Vegas, Nevada, United States	2
Title vacated	1990	Hearns' last defense was against Michael Olajide on April 28, 1990 in Atlantic City, New Jersey, United States.
Chris Eubank def. Michael Watson	September 21, 1991	London, England	14
Steve Collins	March 18, 1995	Millstreet, Ireland	7
Title vacated	October 1997	Collins was stripped of the title when he was unable to defend due to injury. His last defense was against Craig Cummings on July 5, 1997 in Glasgow, Scotland.
Joe Calzaghe def. Chris Eubank	October 11, 1997	Sheffield, England	21
Title vacated	June 2008	Calazghe vacated all of his titles when he announced he would retire. His last defense was on November 3, 2007 against Mikkel Kessler at Cardiff, Wales
Denis Inkin def. Fulgencio Zuniga	September 27, 2008	Hamburg, Germany	0
Károly Balzsay	January 10, 2009	Magdeburg, Germany	1
Robert Stieglitz	August 22, 2009	Budapest, Hungary	6
Arthur Abraham	August 25, 2012	Berlin, Germany	1
Robert Stieglitz	March 23, 2013	Magdeburg, Saxony-Anhalt Germany	2
Arthur Abraham	March 1, 2014	Magdeburg, Saxony-Anhalt Germany	5
Gilberto Ramírez current champion	April 9, 2016	Las Vegas, United States	3

Middleweight

Name:	Date:	Location:	Defenses:
Doug DeWitt def. Robbie Sims	April 18, 1989	Atlantic City, New Jersey, United States	1
Nigel Benn	April 29, 1990	Atlantic City, New Jersey, United States	1
Chris Eubank	November 18, 1990	Birmingham, England	3
Title vacated	September 21, 1991	Eubank vacated the title to move up to Super Middleweight. His last defense was against Michael Watson on June 22, 1991 in London, England.
Gerald McClellan def. John Mugabi	November 20, 1991	London, England	0
Title vacated	February 24, 1992	McClellan vacated the title to move up to Super Middleweight.
Chris Pyatt def. Sumbu Kalambay	May 19, 1993	Leicester, England	2
Steve Collins	May 11, 1994	Sheffield, England	0
Title vacated	March 18, 1995	Collins vacated the title to move up to Super Middleweight.
Lonnie Bradley def. David Mendez	May 19, 1995	Primm, Nevada, United States	6
Title vacated	1997	Bradley vacated title to have eye surgery to repair a detached retina.
Otis Grant def. Ryan Rhodes	December 13, 1997	Sheffield, England, United Kingdom	1
Title vacated	November 14, 1998	Grant vacated the title to move up to Light Heavyweight. His only defense was against Ernesto Rafael Sena on May 12, 1998 in Kanata, Ontario, Canada.
Bert Schenk def. Freeman Barr	January 30, 1999	Cottbus, Germany	1
Title vacated	Mid-1999	Schenk vacated title due to achilles injury. He had one successful defense was against Juan Ramon Medina on May 22, 1999 in Budapest, Hungary.
Jason Matthews def. Ryan Rhodes	July 17, 1999	Doncaster, England	0
Armand Krajnc	November 27, 1999	Lübeck, Germany	3
Krajnc vacated the title on June 4, 2001, while in a dispute with Universum Box-Promotion; the WBO unanimously voted on September 17, 2001 that Krajnc never actually vacated and remained as WBO champion.
Harry Simon	April 6, 2002	Copenhagen, Denmark	0
Harry Simon awarded interim title on July 21, 2001 after defeating Hacine Cherifi. At the time it was believed that Krajnc had vacated the title, however, the WBO later ruled that Krajnc remained as champion.
Title vacated	November 2002	Title vacated after Simon sentenced to prison due to his role in fatal car crash.
Héctor Javier Velazco def. Andras Galfi	May 10, 2003	Buenos Aires, Argentina	0
Felix Sturm	September 13, 2003	Berlin, Germany	1
Oscar De La Hoya	June 5, 2004	Las Vegas, Nevada, United States	0
Bernard Hopkins	September 18, 2004	Las Vegas, Nevada, United States	1
Jermain Taylor	July 16, 2005	Las Vegas, Nevada, United States	3
Kelly Pavlik	September 29, 2007	Atlantic City, New Jersey, United States	3
Sergio Gabriel Martínez	April 17, 2010	Atlantic City, New Jersey, United States	0
Title stripped	May 29, 2010	Title stripped because Martinez refused to vacate WBC Light Middleweight title.
Dmitry Pirog def. Daniel Jacobs	July 31, 2010	Las Vegas, Nevada, United States	3
Title stripped	August 2012	Pirog stripped of title after being unable to defend due to back injury. Last defense was against Nobuhiro Ishida on January 5, 2012 at Moscow, Russia
Hassan N'Dam N'Jikam interim champ promoted	August 25, 2012	NA	0
Peter Quillin	October 20, 2012	Washington D.C., United States	3
Title vacated	September 4, 2014	Quillin vacates over unwillingness to fight mandatory challenger Matt Korobov.
Andy Lee def. Matt Korobov	December 13, 2014	Las Vegas, United States	1
Billy Joe Saunders current champion	December 19, 2015	Manchester, England	3

Junior middleweight

Name:	Date:	Location:	Defenses:
John David Jackson def. Lupe Aquino	December 8, 1988	Detroit, Michigan, United States	6
Title vacated	1993	Jackson vacated the title to move up to Middleweight. His last defense was against Michele Mastrodonato on December 19, 1992 in San Severo, Italy.
Verno Phillips def. Lupe Aquino	October 30, 1993	Phoenix, Arizona, United States	4
Paul Jones	November 22, 1995	Sheffield, England	0
Title vacated	February 1996	Jones was stripped of the title.
Bronco McKart def. Santos Cardona	March 1, 1996	Indio, California, United States	0
Ronald "Winky" Wright	May 17, 1996	Monroe, Michigan, United States	3
Harry Simon	August 22, 1998	Temba, South Africa	4
Title vacated	July 2001	Simon vacated the title to move up to Middleweight. His last defense was against Wayne Alexander on February 10, 2001 in Widnes, England, United Kingdom.
Daniel Santos def. Luis "Yori Boy" Campas	March 16, 2002	Las Vegas, Nevada, United States	4
Sergiy Dzindziruk	December 3, 2005	Magdeburg, Germany	6
Title vacated	October 5, 2011	Dzindziruk was stripped of the title due to inactivity caused by injuries. As a result, Zaurbek Baysangurov was promoted from interim champion.
Zaurbek Baysangurov interim champ promoted	October 5, 2011	NA	2
Title stripped	June 2013	Stripped due to inactivity. His last defense was against Lukas Konecny on October 6, 2012 in Kiev, Ukraine
Demetrius Andrade def. Vanes Martirosyan	November 9, 2013	Corpus Christi, Texas	1
Title stripped	July 31, 2015	Andrade was stripped of the title due to inactivity.
Liam Smith def. John Thompson	October 10, 2015	Manchester, England	2
Canelo Álvarez	September 17, 2016	Arlington, Texas	0
Title vacated	May 19, 2017	Álvarez vacated the title to move up to middleweight
Miguel Cotto def. Yoshihiro Kamegai	August 26, 2017	Carson, California	0
Sadam Ali	December 2, 2017	New York City, New York, United States	0
Jaime Munguia	May 12, 2018	Verona, New York, United States	2

Welterweight

Name:	Date:	Location:	Defenses:
Genaro Léon def. Danny Garcia	May 6, 1989	Santa Ana, California, United States	0
Title vacated	1989
Manning Galloway def. Al Hamza	December 15, 1989	Yabucoa, Puerto Rico	7
Gert Bo Jacobsen	February 12, 1993	Randers, Denmark	0
Title vacated	1993
Eammon Loughran def. Lorenzo Smith	October 16, 1993	Belfast, Northern Ireland	5
José Luis López	April 13, 1996	Liverpool, England, United Kingdom	1
Title vacated	1996–1997	López's only defense was against Luis Ramón Campas on October 6, 1996 in Los Angeles, California, United States.
Mihai Leu def. Santiago Samaniego	February 22, 1997	Hamburg, Germany	1
Title vacated	1997	Title vacated when Leu retired. His only defense was against Michael Carruth on September 20, 1997 in Aachen, Germany.
Ahmed Kotiev def. Leonard Townsend	February 22, 1997	Stuttgart, Germany	4
Daniel Santos	May 6, 2000	Neuss, Germany	2
Title vacated	July 21, 2001	Title vacated when a bout between Santos and Antonio Margarito in Bayamón, Puerto Rico ends in a no-contest in the first round.
Antonio Margarito def. Antonio Díaz	March 16, 2002	Las Vegas, Nevada, United States	7
Paul Williams	July 14, 2007	Carson City, California, United States	0
Carlos Quintana	February 9, 2008	Temecula, California, United States	0
Paul Williams (2)	June 7, 2008	Uncasville, Connecticut, United States	0
Title vacated	November 2008	Williams vacated the title to fight for the Jr. Middleweight Title.
Miguel Cotto	February 21, 2009	Madison Square Garden, New York, United States	1
Manny Pacquiao	November 12, 2011	Las Vegas, Nevada, United States	3
Timothy Bradley	June 9, 2012	Las Vegas, Nevada, United States	2
Manny Pacquiao (2)	April 12, 2014	Las Vegas, Nevada, United States	1
Floyd Mayweather Jr.	May 2, 2015 – July 3, 2015	Las Vegas, Nevada, United States	0
Title stripped	July 6, 2015	Mayweather stripped of title for failing to pay a sanctioning fee and vacate his 2 junior middleweight titles
Timothy Bradley interim champ promoted	July 6, 2015	NA	1
Title vacated	February 9, 2016	Bradley vacated in order to fight a third time with Manny Pacquiao
Jessie Vargas def. Sadam Ali	March 5, 2016	Washington, District of Columbia	0
Manny Pacquiao (3)	November 5, 2016	Las Vegas, Nevada, United States	0
Jeff Horn	July 2, 2017	Brisbane, Australia	1
Terence Crawford	June 9, 2018	Las Vegas, Nevada, United States	0

Junior welterweight

Name:	Date:	Location:	Defenses:
Héctor Camacho def. Ray Mancini	March 6, 1989	Reno, Nevada, United States	2
Greg Haugen	February 23, 1991	Las Vegas, Nevada, United States	0
Héctor Camacho (2)	May 19, 1991	Reno, Nevada, United States	0
Title vacated	1992
Carlos González def. Jimmy Paul	June 29, 1992	Inglewood, California, United States	3
Zack Padilla	June 7, 1993	Las Vegas, Nevada, United States	4
Title vacated	July 24, 1994	Title vacated when Padilla retired after his final defense against Juan Laporte in Los Angeles, California.
Sammy Fuentes def. Fidel Avendano	February 20, 1995	Inglewood, California, United States	1
Giovanni Parisi	March 9, 1996	Milan, Italy	5
Carlos González (2)	May 29, 1998	Pesaro, Italy	0
Randall Bailey	May 15, 1999	Miami, Florida, United States	2
Ener Julio	July 22, 2000	Miami, Florida, United States	0
Title vacated	June 2001	Title vacated when a routine eye exam reveals that Julio has cataracts.
DeMarcus Corley def. Felix Flores	June 30, 2001	Las Vegas, Nevada, United States	2
Zab Judah	July 12, 2003	Las Vegas, Nevada, United States	1
Title vacated	2004	Judah vacated the title to move up to the Welterweight division.
Miguel Cotto def. Kelson Pinto	September 11, 2004	San Juan, Puerto Rico	6
Title vacated	2006	Cotto vacated the title to move up to Welterweight and challenge for the WBA title His last defense was against Paul Malignaggi on June 10, 2006 in New York City, New York.
Ricardo Torres def. Mike Arnaoutis	November 18, 2006	Las Vegas, Nevada, United States	3
Kendall Holt def. Ricardo Torres	July 5, 2008	Las Vegas, Nevada, United States	1
Timothy Bradley this bout was a title unification match for both WBO and WBC titles	April 4, 2009	Montreal, Quebec, Canada	1
Title vacated	June 27, 2012	Bradley vacated the title to move up to Welterweight and challenge for the WBO title His last defense was against Joel Casamayor on November 12, 2011 in Las Vegas.
Juan Manuel Márquez interim champ promoted	June 27, 2012	Mexico City, Mexico	0
Title vacated	October 12, 2013	Márquez vacated the title to move up to Welterweight and challenge Timothy Bradley for the WBO belt
Mike Alvarado interim champ promoted	October 12, 2013	Las Vegas, Nevada, United States	0
Ruslan Provodnikov	October 19, 2013	Denver, Colorado, United States	0
Chris Algieri	June 14, 2014	Brooklyn, New York, United States	0
Title stripped	November 22, 2014	Algieri was stripped of title before challenging Manny Pacquiao for the WBO welterweight belt.
Terence Crawford def. Thomas Dulorme	April 18, 2015	Arlington, Texas	6
Title vacated	October 26, 2017	Crawford vacated to move up to welterweight
Maurice Hooker def. Terry Flanagan	June 9, 2018	Manchester, England	0

Lightweight

Name:	Date:	Location:	Defenses:
Mauricio Aceves def. Amancio Castro	May 6, 1989	Santa Ana, California, United States	1
Dingaan Thobela	September 22, 1990	Brownsville, Texas, United States	2
Title vacated	1991	Thobela's last defense was against Antonio Rivera on September 14, 1991 in Johannesburg, South Africa.
Giovanni Parisi def. Javier Altamirano	September 25, 1992	Voghera, Italy	2
Title vacated	1993	Parisi's last defense was against Antonio Rivera on September 24, 1993 in Rome, Italy.
Oscar De La Hoya def. Jorge Páez	July 29, 1994	Las Vegas, Nevada, United States	6
Title vacated	1996	de la Hoya's last defense was against Jesse James Leija on December 15, 1995 in New York City, New York, United States.
Artur Grigorian def. Antonio Rivera	April 13, 1996	Hamburg, Germany	17
Acelino Freitas	January 3, 2004	Mashantucket, Connecticut, United States	0
Diego Corrales	August 7, 2004	Mashantucket, Connecticut, United States	1
Title vacated	2006	Corrales' only defense was against José Luis Castillo on May 7, 2005 in Las Vegas, Nevada.
Acelino Freitas (2) def. Zahir Raheem	April 29, 2006	Mashantucket, Connecticut, United States	0
Juan Díaz	April 28, 2007	Mashantucket, Connecticut, United States	1
Nate Campbell	March 8, 2008	Cancún, Mexico	0
Title vacated	February 14, 2009	Campbell was stripped of the title for being unable to make weight for his next fight against Ali Funeka on February 14, 2009 in Sunrise, Florida, United States
Juan Manuel Márquez def. Juan Díaz	February 28, 2009	Houston, Texas, United States	2
Title vacated	March 2011	Márquez vacates to move up to welterweight. Last defense on November 27, 2010 at Las Vegas, Nevada against Michael Katsidis
Ricky Burns Interim champ promoted	January 6, 2012		4
Terence Crawford	March 1, 2014	Glasgow, Scotland	2
Title vacated	March 24, 2015	Crawford vacates to fight for the super lightweight title. Last defense against Raymundo Beltrán on November 29, 2014 at Omaha, Nebraska, United States
Terry Flanagan def. Jose Zepeda	July 11, 2015	Manchester, England	5
Title vacated	October 26, 2017	Flanagan vacated to move up to super lightweight
Ray Beltrán def. Paulus Moses	February 16, 2018	Reno, Nevada	0
José Pedraza	August 25, 2018	Glendale, Arizona	0

Junior lightweight

Name:	Date:	Location:	Defenses:
John John Molina def. Juan Laporte	April 29, 1989	San Juan, Puerto Rico	0
Title vacated	1989
Kamel Bou Ali def. Antonio Rivera	December 9, 1989	Teramo, Italy	2
Daniel Londas	March 21, 1992	San Rufo, Italy	0
Jimmi Bredahl	September 4, 1992	Copenhagen, Denmark	1
Oscar De La Hoya	March 5, 1994	Los Angeles, California, United States	1
Title vacated	1994	de la Hoya vacated the title in order to move up to the Lightweight division. Only defense against Giorgio Campanella on Apr 1994 at Las Vegas, Nevada
Regilio Tuur def. Eugene Speed	September 24, 1994	Rotterdam, Netherlands	6
Title vacated	1996–1997	Titel vacated because of Tuur's retirement. Tuur's last defense was against Jose Vida Ramos on September 6, 1996 in Atlantic City, New Jersey, United States.
Barry Jones def. Wilson Palacio	December 19, 1997	London, England	0
Title vacated	1998	Jones lost his boxing license after a brain scan found an anomaly. The WBO vacated his title before Jones regained his license
Anatoly Alexandrov def. Julien Lorcy	May 16, 1998	Paris, France	1
Acelino Freitas	August 7, 1999	Le Cannet, France	11
Title vacated	2003	Freitas vacated the title to move up to the lightweight division. His last defense was against Jorge Rodrigo Barrios on August 9, 2003 in Miami, Florida.
Diego Corrales def. Joel Casamayor	March 6, 2004	Mashantucket, Connecticut, United States	0
Title vacated	2004	Corrales vacated the title to move up to the lightweight division.
Mike Anchondo def. Pablo Chacón	July 15, 2004	Dallas, Texas, United States	0
Jorge Rodrigo Barrios	April 8, 2005	Miami, Florida, United States	2
Title vacated	September 15, 2006	Barrios was stripped of the title after he was overweight for his scheduled September 16 defense against Joan Guzmán. His last defense was against Janos Nagy on May 20, 2006 in Los Angeles, California, United States
Joan Guzmán def. Jorge Rodrigo Barrios	September 16, 2006	Las Vegas, Nevada, United States	2
Title vacated	May 2008	Guzman vacated the title after deciding to move up to Lightweight. Last defense against Humberto Soto on November 2007 at Atlantic City, United States
Alex Arthur interim champ promoted	May 2008	NA	0
Nicky Cook	September 9, 2008	Manchester, England	0
Román Martínez	March 14, 2009	Manchester, England	2
Ricky Burns	September 4, 2010	Glasgow, Scotland	3
Title vacated	Aug 2011	Burns vacated the title after deciding to move up to Lightweight. Last defense against Nicky Cook on July 2011 at Liverpool, England
Adrien Broner def. Vicente Martín Rodríguez	November 26, 2011	Cincinnati, Ohio, United States	2
Title vacated	August 2012	Broner vacated the title after deciding to move up to Lightweight. Last defense against Vicente Escobedo on July 2012 at Cincinnati, Ohio, United States
Román Martínez def. Miguel Beltrán Jr.	September 15, 2012	Las Vegas, Nevada, United States	2
Mikey Garcia	November 9, 2013	Corpus Christi, Texas, United States	1
Title vacated	October 2014	Garcia vacated the title to move up in weight. Only defense against Juan Carlos Burgos on January 2014 at Cincinnati, Madison Square Garden, New York, United States
Orlando Salido interim champ promoted	October 14, 2014	NA	0
Román Martínez	April 11, 2015	San Juan, Puerto Rico	1
Vasyl Lomachenko	June 11, 2016	New York City, New York, United States	4
Title vacated	May 23, 2018	Lomachenko vacated the title after wiinning the WBA Lightweight title against Jorge Linares
Masayuki Ito def. Christopher Díaz current champion	July 28, 2018	Kissimmee, United States	0

Featherweight

Name:	Date:	Location:	Defenses:
Maurizio Stecca def. Pedro Nolasco	January 28, 1989	Milan, Italy	1
Louie Espinoza	November 11, 1989	Rimini, Italy	0
Jorge Páez	April 7, 1990	Las Vegas, Nevada, United States	1
Title vacated	1990	Paez's only defense was against Troy Dorsey on July 8, 1990 in Las Vegas, Nevada.
Maurizio Stecca (2) def. Armando Juan Reyes	January 26, 1991	Sassari, Italy	2
Colin McMillan	February 16, 1992	London, England	0
Rubén Darío Palacios	September 26, 1992	London, England, United Kingdom	0
Title vacated	1992	Title vacated when Palacios retired.
Steve Robinson def. John Davison	April 17, 1993	Washington, England	7
Naseem Hamed	September 30, 1995	Cardiff, Wales	15
Title vacated	September 30, 2000	Hamed's last defense was against Augie Sanchez on August 19, 2000 in Mashantucket, Connecticut, United States.
István Kovács def. Antonio Díaz	January 27, 2001	Munich, Germany	0
Pablo Chacón	June 16, 2001	Budapest, Hungary	2
Title vacated	2002	Chacón's last defense was against Victor Polo on January 19, 2002 in London, England, United Kingdom
Scott Harrison def. Victor Santiago	June 8, 2002	Glasgow, Scotland	2
Manuel Medina	July 12, 2003	Glasgow, Scotland	0
Scott Harrison (2)	November 29, 2003	Glasgow, Scotland	6
Title vacated	June 2006	Harrison was stripped of the title after pulling out of a scheduled defense. His last defense was against Nedal Hussein on November 5, 2005 in Glasgow, Scotland.
Juan Manuel Márquez def. Terdsak Jandaeng	August 5, 2006	Stateline, Nevada, United States	1
Title vacated	February 2007	Márquez vacates to move up to super featherweight. Only defense against Jimrex Jaca in November 2006 at Hidalgo, Texas
Steven Luevano	July 14, 2007	London, England	5
Juan Manuel López	January 23, 2010	New York City, USA	1
Orlando Salido	April 16, 2011	Bayamón, Puerto Rico	2
Mikey Garcia	January 19, 2013	Madison Square Garden, New York	0
Title stripped	June 14, 2013	Garcia stripped of title for not making weight in his defense against Juan Manuel López in June 2013 at Dallas, Texas. TItle at stakes for Lopez only, who lost the bout
Orlando Salido (2) def. Orlando Cruz	October 12, 2013	Las Vegas, Nevada	0
Title vacated	March 1, 2014	Title stripped after Salido couldn't make weight on his defense against Vasyl Lomachenko. Title was at stake for Lomachenko but Salido won via split decision.
Vasyl Lomachenko def. Gary Russell Jr.	June 21, 2014	Carson, California	3
Title vacated	July 21, 2016	Vacated after winning WBO Super featherweight title against Román Martínez
Óscar Valdez def. Matías Rueda	July 23, 2016	Las Vegas, Nevada	4

Junior featherweight

Name:	Date:	Location:	Defenses:
Kenny Mitchell def. Julio Gervacio	April 29, 1989	San Juan, Puerto Rico	1
Valerio Nati	December 9, 1989	Teramo, Italy	0
Orlando Fernandez	May 12, 1990	Sassari, Italy	0
Jesse Benavides	May 24, 1991	Corpus Christi, Texas, United States	1
Duke McKenzie	October 15, 1992	London, England	0
Daniel Jiménez	June 9, 1993	London, England	4
Marco Antonio Barrera	March 31, 1995	Anaheim, California, United States	8
Junior Jones	November 22, 1996	Tampa, Florida, United States	1
Kennedy McKinney	April 18, 1997	New York City, New York, United States	0
Title vacated	1998	McKinney vacates to fight for featherweight title.
Marco Antonio Barrera (2) def. Richie Wenton	October 31, 1998 – February 19, 2000	Atlantic City, New Jersey, United States	2
Marco Antonio Barrera (3) reinstated as champion	March 2000		2
Title vacated	April 7, 2001	Title vacated when Barrera wins the vacant IBO Featherweight title, defeating Naseem Hamed in Las Vegas, Nevada. His last defense was against Jesús Salud on December 1, 2000 also in Las Vegas.
Agapito Sánchez def. Jorge Monsalvo	June 23, 2001	Las Vegas, Nevada, United States	1
Title vacated	2002	Title stripped due to inactivity. Only defense was a draw against Manny Pacquiao on November 11, 2001 at San Francisco, California
Joan Guzmán def. Jorge Monsalvo	August 17, 2002	Cardiff, Wales	2
Title vacated	July 2005	The WBO stripped Guzman of the title due to his not making weight for a defense against Marcos Licona, scheduled for November 6. His last defense was against Fernando Beltrán, Jr. on April 22, 2005 in Hidalgo, Texas, United States.
Daniel Ponce de León def. Sod Looknongyangtoy	October 29, 2005	Tucson, Arizona, United States	6
Juan Manuel López	June 7, 2008	Atlantic City, New Jersey, United States	5
Title vacated	January 23, 2010	Juan Manuel López vacated the title to move up to Featherweight. Last defense was on October 10, 2009 against Rogers Mtagwa at the Madison Square Garden, New York
Wilfredo Vázquez Jr. def. Marvin Sonsona	February 27, 2010	Bayamón, Puerto Rico	2
Jorge Arce	May 7, 2011	MGM Grand, Las Vegas	1
Title vacated	November 2011	Arce vacates to go down to bantamweight. Only defense was against Simphiwe Nongqayi on September 24, 2011 at Mexicali, Mexico
Nonito Donaire def. Wilfredo Vázquez Jr.	February 4, 2012	San Antonio, Texas	3
Guillermo Rigondeaux	April 13, 2013	New York, New York	3
Title vacated	October 28, 2015	Rigondeaux was stripped of title due to inactivity
Nonito Donaire def. César Juárez	December 11, 2015	San Juan, Puerto Rico	1
Jessie Magdaleno	November 5, 2016	Las Vegas, United States	1
Isaac Dogboe	April 28, 2018	Philadelphia, USA	0

Bantamweight

Name:	Date:	Location:	Defenses:
Israel Contreras def. Maurizio Lupino	February 3, 1989	Caracas, Venezuela	1
Title vacated	1990	Contreras vacated the title in order to challenge Luisito Espinosa for the WBA title. His only defense was against Ray Minus on September 2, 1990 in Nassau, Bahamas.
Gaby Canizales def. Miguel "Happy" Lora	March 12, 1991	Auburn Hills, Michigan, United States	0
Duke McKenzie	March 12, 1991	London, England	2
Rafael del Valle	May 13, 1992	London, England	2
Alfred Kotey	July 30, 1994	London, England	2
Daniel Jiménez	October 21, 1995	London, England	1
Robbie Regan	April 26, 1996	Cardiff, Wales	0
Title vacated	1996	Title vacated when Regan retired.
Jorge Eliécer Julio def. Oscar Maldonado	July 28, 1997	Inglewood, California, United States	3
Johnny Tapia	January 8, 2000	Albuquerque, New Mexico, United States	1
Title vacated	2000	Tapia vacated to fight Paulie Ayala at super bantamweight. His only defense was against Pedro Javier Torres on May 6, 2000 at Las Cruces, New Mexico
Mauricio Martínez def. Lester Fuentes	September 4, 2000	Manchester, England	1
Cruz Carbajal	March 15, 2002	Veracruz, Mexico	2
Ratanachai Sor Vorapin	May 7, 2004	Bangkok, Thailand	1
Jhonny González	October 29, 2005	Tucson, Arizona, United States	1
Gerry Peñalosa	August 11, 2007	Sacramento, California, United States	1
Title vacated	April 2009	Title Stripped due to Peñalosa not defending the belt for a year. Last defense on April 6, 2008 at Quezon City, Philippines against Ratanachai Sor Vorapin
Fernando Montiel def. Diego Oscar Silva	March 28, 2009	Baja California, Mexico	2
Nonito Donaire	February 19, 2011	Las Vegas, Nevada, United States	2
Title vacated	October 2011	Donaire vacated to move up to super bantamweight. Last defense was against Omar Narváez October 22, 2011 at the Madison Square Garden, New York
Jorge Arce def. Angky Angkotta	November 26, 2011	Plaza de Toros Rea, Mazatlan, Sinaloa, Mexico	0
Title vacated	August 2012	Arce vacated to fight at super bantamweight against Nonito Donaire.
Pungluang Sor Singyu def. A. J. Banal	October 20, 2012	Pasay City, Metro Manila, Philippines	0
Paulus Ambunda	March 2, 2013	Windhoek, Namibia	0
Tomoki Kameda	August 1, 2013	Cebu, Philippines	3
Title vacated	April 23, 2015	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. As a result, Kameda relinquished his title
Pungluang Sor Singyu def. Ryo Akaho	August 8, 2015	Ratchaburi, Thailand	1
Marlon Tapales	July 27, 2016	Ayutthaya, Thailand	0
Title stripped	April 22, 2017	Tapales was stripped of title at scales before fighting Shohei Omori. Title was at stakes for Omori only but he lost the fight. After the fight, WBO elevated interim champion Zolani Tete to full champion
Zolani Tete interim champ promoted	April 23, 2017	N/A	3

Junior bantamweight

Name:	Date:	Location:	Defenses:
José Ruíz Matos def. Bebis Rojas	April 29, 1989	San Juan, Puerto Rico	4
José Quirino	February 22, 1992	Las Vegas, Nevada, United States	0
Johnny Bredahl	September 4, 1992	Copenhagen, Denmark	3
Title vacated	1994	Bredahl's last defense was against Eduardo Nazario on March 25, 1994 in Aakirkeby, Denmark.
Johnny Tapia def. Henry Martínez	October 14, 1994	Albuquerque, New Mexico, United States	13
Title vacated	1998	Tapia's last defense was against Rodolfo Blanco on February 13, 1998 in Albuquerque, New Mexico.
Victor Godoi def. Pedro Morquecho	November 7, 1998	Chubut, Argentina	0
Diego Morales	June 7, 1999	Tijuana, Mexico	1
Adonis Rivas	November 20, 1999	Las Vegas, Nevada, United States	2
Pedro Alcázar	June 16, 2001	Panama City, Panama	1
Fernando Montiel	June 22, 2002	Las Vegas, Nevada, United States	1
Mark Johnson	August 16, 2003	Uncasville, Connecticut, United States	1
Iván Hernández	September 25, 2004	Memphis, Tennessee, United States	0
Fernando Montiel (2)	April 9, 2005	El Paso, Texas, United States	6
Title vacated	2009	Montiel's's last defense was against Luis Maldonado on May 31, 2008 in Mexico.
José López def. Pramuansak Posuwan	March 28, 2009	Bayamón, Puerto Rico	0
Marvin Sonsona	September 4, 2009	Rama, Ontario, Canada	0
Title vacated	2009	Sonsona was stripped of the title after failing to make weight (2.6 lbs. over) in his first title defense against Alejandro Hernández, whom he fought with to a draw.
Jorge Arce def. Angky Angkota	January 30, 2010	Mexico City, Mexico	0
Title vacated	April 24, 2010	Arce had to vacate the title upon his move to bantamweight division.
Omar Andrés Narváez def. Everth Briceño	May 15, 2010	Buenos Aires, Argentina	11
Naoya Inoue current champion	December 30, 2014	Tokio, Japan	7

Flyweight

Name:	Date:	Location:	Defenses:
Elvis Álvarez def. Miguel Mercedes	March 3, 1989	Medellín, Colombia	0
Title vacated	March 1990	Alvarez vacated the title due to lack of interest in it.
Isidro Pérez def. Angel Rosario	August 18, 1990	Ponce, Puerto Rico	2
Pat Clinton	March 18, 1992	Glasgow, Scotland	1
Jacob Matlala	May 15, 1993	Glasgow, Scotland	3
Alberto Jiménez	February 11, 1995	Hammanskraal, South Africa	5
Carlos Gabriel Salazar	December 13, 1996	Buenos Aires, Argentina	5
Ruben Sánchez León	August 14, 1998	Mexicali, Mexico	1
José López	April 23, 1999	Zaragoza, Spain	1
Title vacated	1999
Isidro García def. José López	December 18, 1999	Indio, California, United States	1
Fernando Montiel	December 15, 2000	Ciudad Obregón, Mexico	3
Title vacated	2001–2002	Montiel vacated the title to move up to super flyweight. His las defense was September 9, 2001 against José López in Reno, Nevada, United States
Adonis Rivas def. Jair Jimenez	May 4, 2002	Managua, Nicaragua	0
Omar Andrés Narváez	July 13, 2002	Buenos Aires, Argentina	16
Title vacated	2010	Narváez vacated the title to move up to super flyweight. His last defense was on June 26, 2009 against Omar Soto at the Luna Park, Buenos Aires
Julio César Miranda def. Richie Mepranum	June 12, 2010	Puebla, Mexico	3
Brian Viloria	July 16, 2011	Honolulu, Hawaii, United States	3
Juan Francisco Estrada	April 6, 2013	Macao, China	5
Title vacated	September 14, 2016	Estrada vacated to move up to super flyweight
Zou Shiming def. Prasitsak Phaprom	November 5, 2016	Las Vegas, United States	0
Sho Kimura	July 28, 2017	Shanghai, China	2
Kosei Tanaka	September 24, 2018	Nagoya, Japan	0

Junior flyweight

Name:	Date:	Location:	Defenses:
Jose De Jesus def. Fernando Martínez	May 19, 1989	San Juan, Puerto Rico	3
Title vacated	March 1992	De Jesus was stripped of the title after failing to defend it in a specific time period. His last defense was against Abdi Pohan on November 10, 1990 in Jakarta, Indonesia.
Josué Camacho def. Eddie Vallejo	July 31, 1992	San Juan, Puerto Rico	1
Michael Carbajal	July 15, 1994	Phoenix, Arizona, United States	0
Title vacated	1994	Carbajal failed to defend the title he had just won, looking forward instead to have another fight with Humberto González 4 months later.
Paul Weir def. Paul Oulden	November 23, 1994	Irvine, Scotland	1
Jacob Matlala	November 18, 1995	Glasgow, Scotland	2
Title vacated	1997	Matlala elected to take a shot against Michael Carbajal rather than defend his title. His last defense of the title was against Mickey Cantwell on February 8, 1997 in Millwall, London.
Jesús Chong def. Eric Griffin	May 31, 1997	Las Vegas, Nevada, United States	0
Melchor Cob Castro	August 25, 1997	Inglewood, California, United States	0
Juan Domingo Córdoba	January 17, 1998	Santiago del Estero, Argentina	1
Jorge Arce	December 5, 1998	Tijuana, Mexico	1
Michael Carbajal (2)	July 31, 1999	Tijuana, Mexico	0
Title vacated	August 1999	Carbajal automatically vacated the title after retiring that same year.
Masibulele Makepula def. Jacob Matlala	February 19, 2000	Brakpan, South Africa	0
Title vacated	2000
Nelson Dieppa def. Andy Tabanas	April 14, 2001	New York City, United States	5
Hugo Cázares	April 30, 2005	San Juan, Puerto Rico	4
Iván Calderón	August 25, 2007	Guaynabo, Puerto Rico	6
Giovani Segura	August 28, 2010	Guaynabo, Puerto Rico	1
Title vacated	April 2011	Segura vacated the title to move up to Flyweight. His last defense of the title was on April 2, 2011 against Iván Calderón in Baja California, Mexico.
Jesús Géles interim champ promoted	April 2011	NA	0
Ramón García Hirales	April 30, 2011	Mexico City, Mexico	0
Donnie Nietes	October 8, 2011	Bacolod, Philippines	9
Title vacated	August 17, 2016	Nietes vacated and moved up to flyweight
Kosei Tanaka def. Moisés Fuentes	December 31, 2016	Gifu, Japan	2
Title vacated	December 1, 2017	Tanaka vacated and moved up to flyweight
Ángel Acosta	December 2, 2017	New York City, New York, United States	2

Mini flyweight

Name:	Date:	Location:	Defenses:
Rafael Torres def. Yamil Caraballo	August 30, 1989	Santo Domingo, Dominican Republic	1
Title vacated	1993	Torres' only defense was against Husni Ray on July 31, 1990 in Jakarta, Indonesia.
Paul Weir def. Fernando Martínez	May 15, 1993	Glasgow, Scotland	1
Title vacated	1993	Weir vacated the title to move up to light flyweight. His only defense was against Lindi Memani on October 25, 1993 in Glasgow, Scotland.
Alex Sánchez def. Orlando Malone	December 22, 1993	El Condado, San Juan, Puerto Rico	6
Ricardo López	August 23, 1997	New York City, New York, United States	0
Title vacated	1997	López vacated all his titles at minimumweight to move up to light flyweight.
Eric Jamili def. Mickey Cantwell	December 19, 1997	London, England, United Kingdom	0
Kermin Guardia	May 30, 1998	Las Vegas, Nevada, United States	3
Title vacated	2001	Guardia vacated the title to move up to light flyweight. His last defense was against Juan Alfonso Keb Baas on April 6, 2001 in Mérida, Yucatán, Mexico.
Jorge Mata def. Reynaldo Frutos	June 29, 2002	Palma, Majorca, Spain	1
Eduardo Ray Márquez	March 28, 2003	Madrid, Spain	0
Iván Calderón	May 3, 2003	Las Vegas, Nevada, United States	11
Title vacated	2007	Calderón vacated the title to move up to light flyweight. His last defense of the title was on April 28, 2007 against Ronald Barrera in Barranquilla, Colombia.
Donnie Nietes def. Pornsawan Porpramook	September 30, 2007	Cebu City, Cebu, Philippines	4
Title vacated	February 25, 2011	Nietes vacated the title to move up to light flyweight. His last defense of the title was on August 14, 2010 against Mario Rodríguez in Guasave, Mexico.
Raúl García interim champ promoted	February 25, 2011	NA	1
Moisés Fuentes	August 27, 2011	Guadalajara, Mexico	2
Title vacated	April 19, 2013	Fuentes vacated the title to move up to light flyweight. His last defense of the title was on October 6, 2012 against Iván Calderón in Bayamón, Puerto Rico.
Merlito Sabillo interim champ promoted	April 19, 2013	NA	2
Francisco Rodríguez Jr.	March 22, 2014	Monterey, Mexico	1
Title vacated	November 2014	Rodríguez vacated the title to move up to flyweight. His only defense of the title was on August 9, 2014 against Katsunari Takayama in Monterrey, Mexico.
Katsunari Takayama def. Go Odaira	December 31, 2014	Osaka, Japan	0
Title vacated	March 2, 2015	Takayama vacated his WBO title to skip mandatory challenger in favor of a fight with former champion Fahlan Sakkreerin
Kosei Tanaka def. Julián Yedras	May 30, 2015	Komaki, Japan	1
Title vacated	April 10, 2016	Tanaka vacated to seek a world title at light flyweight
Katsunari Takayama def. Riku Kano	August 20, 2016	Sanda, Japan	0
Title vacated	April 14, 2017	Takayama announced retirement from professional boxing in order to concentrate on training for the 2020 Summer Olympics
Tatsuya Fukuhara interim champ promoted	April 14, 2017	N/A	0
Ryuya Yamanaka	August 27, 2017	Ashikita, Japan	1
Vic Saludar	July 13, 2018	Kobe, Japan	0

External links

Official list of current WBO champions