List of IBO world champions

This is a list of IBO world champions, showing every world champion certificated by the International Boxing Organization (IBO) since 1993.

r – Champion relinquished title s – Champion stripped of title

Heavyweight Source: No. Name Duration of reign Defenses1 Pinklon ThomasNov 14, 1992 – Jan 29, 1993s02 Lionel ButlerFeb 23, 1993 – Mar 1993s03 Danell NicholsonAug 4, 1994 – Oct 1994r04 Jimmy ThunderOct 29, 1994 – Jul 16, 1995s25 Brian NielsenJan 12, 1996 – Jun 18, 1999s56 Lennox LewisNov 13, 1999 – Apr 22, 200137 Hasim RahmanApr 22, 2001 – Nov 17, 200108 Lennox Lewis (2)Nov 17, 2001 – Feb 6, 2004r29 Wladimir KlitschkoApr 22, 2006 – Nov 28, 20151810 Tyson FuryNov 28, 2015 – Oct 12, 2016r011 Anthony JoshuaApr 29, 2017 – Jun 1, 2019312 Andy Ruiz Jr.Jun 1, 2019 – Dec 7, 2019013 Anthony Joshua (2)Dec 7, 2019 – Sep 25, 2021114 Oleksandr UsykSep 25, 2021 – Jun 26, 2026r5

Cruiserweight Source: No. Name Duration of reign Defenses1 David IzeqwireDec 28, 1993 – Nov 5, 199412 Adolpho WashingtonNov 5, 1994 – Mar 17, 1995s03 Ted CofieNov 3, 1995 – 1997r04 Booker T. WordApr 18, 1997 – 1997r05 James ToneyJun 14, 1997 – 1998r06 Robert DanielsMay 5, 1998 – 1999r07 Thomas HearnsApr 10, 1999 – Apr 8, 200008 Uriah GrantApr 8, 2000 – Feb 3, 200109 Carl ThompsonFeb 3, 2001 – Nov 26, 2001010 Ezra SellersNov 26, 2001 – Apr 6, 2002s011 Sebastiaan RothmannOct 26, 2002 – Feb 6, 2004112 Carl Thompson (2)Feb 6, 2004 – Feb 2006s113 Tomasz AdamekJun 9, 2007 – 2008r014 Johnathon BanksJul 12, 2008 – Feb 27, 2009s015 Danny GreenAug 15, 2009 – Jul 20, 2011416 Antonio TarverJul 20, 2011 – Jul 2012s117 Danny Green (2)Nov 21, 2012 – 2013r018 Ola AfolabiNov 2, 2013 – 2015r019 Rakhim ChakhkievMay 22, 2015 – Nov 4, 2015020 Ola Afolabi (2)Nov 4, 2015 – Feb 27, 2016021 Marco HuckFeb 27, 2016 – Apr 1, 2017s122 Kevin LerenaSep 9, 2017 – Nov 1, 2021s623 Jack MasseyNov 27, 2021 – November 1, 2022s124 Yves NgabuSep 09, 2023 – October 1, 2025s125 Juergen UldedajOct 25, 2025 – present1

Light heavyweight Source: No. Name Duration of reign Defenses1 Lenny LaPagliaAug 20, 1993 – 1993r02 Drake ThadziMay 14, 1997 – Dec 12, 1998r13 Roy Jones Jr.Nov 18, 1999 – May 15, 200454 Antonio TarverMay 15, 2004 – Dec 18, 200405 Glen JohnsonDec 18, 2004 – Jun 18, 200506 Antonio Tarver (2)Jun 18, 2005 – Jun 10, 200617 Bernard HopkinsJun 10, 2006 – 2007r08 Antonio Tarver (3)Jun 9, 2007 – Oct 11, 200829 Chad DawsonOct 11, 2008 – Aug 14, 2010210 Jean PascalAug 14, 2010 – May 21, 2011111 Andrzej FonfaraNov 16, 2012 – 2013s012 Blake CaparelloOct 17, 2013 – 2014s013 Thomas OosthuizenMar 14, 2015 – Jun 5, 2015s014 Umar SalamovMay 21, 2016 – May 17, 2017r015 Igor MikhalkinMay 19, 2017 – Mar 14, 2018r116 Karo MuratMar 24, 2018 – Dec 15, 2018017 Sven FornlingDec 15, 2018 – Nov 16, 2019018 Dominic Boesel Nov 16, 2019 – Oct 10, 2020019 Robin KrasniqiOct 10, 2020 – Oct 09, 2021020 Dominic Boesel (2) Oct 09, 2021 – May 14, 2022s021 Padraig McCroryOct 22, 2022 – -022 Lyndon ArthurSep 01, 2023 – Dec 23, 2023023 Dmitry BivolDec 23, 2023 – Oct 12, 2024124 Artur BeterbievOct 12, 2024 – Feb 22, 2025025 Dmitry Bivol (2)Feb 22, 2025 – present0

Super middleweight Source: No. Name Duration of reign Defenses1 Willie BallJul 17, 1992 – Oct 9, 199202 Todd NadonOct 9, 1992 – 1993r03 Vinny PazienzaDec 28, 1993 – 1994r04 Rick ThornberryApr 21, 1995 – 1996s05 Karl WillisOct 13, 1996 – 1996s06 Eddie WhiteNov 27, 1996 – 1997s07 Mads LarsenMay 2, 1997 – 1999r48 Dana RosenblattNov 5, 1999 – 2000r09 Adrian DodsonMar 3, 2001 – Apr 7, 2001010 Ramon Arturo BrítezApr 7, 2001 – Dec 10, 2001 011 Brian MageeDec 10, 2001 – Jun 26, 2004712 Robin ReidJun 26, 2004 – Aug 6, 2005013 Jeff LacyAug 6, 2005 – Mar 4, 2006s114 Fulgencio ZúñigaSep 1, 2007 – 2008r015 Sakio BikaNov 13, 2008 – 2010s016 Isaac ChilembaJun 19, 2010 – 2011s117 Thomas OosthuizenMar 26, 2011 – 2014s718 Donovan GeorgeAug 23, 2014 – 2014s019 Zac DunnJun 27, 2015 – 2016s020 Renold QuinlanOct 14, 2016 – Feb 4, 2017021 Chris Eubank Jr.Feb 4, 2017 – Feb 17, 2018s222 Chris Eubank Jr.(2)Feb 23, 2019 – Dec 17, 2019r023 Carlos GóngoraDec 18, 2020 – Dec 18, 2021r124 Lerrone RichardsDec 18, 2021 – 2022s025 Osleys IglesiasDec 9, 2022 – Present5

Middleweight Source: No. Name Duration of reign Defenses1 Glenwood BrownAug 25, 1995 – 1997r02 Freeman BarrSep 20, 1997 – 1998r13 Mpush MakambiSep 8, 1998 – Sep 30, 200034 Raymond JovalSep 30, 2000 – 2004s45 Raymond Joval (2)Jun 3, 2005 – 2006r16 Daniel GealeDec 14, 2007 – May 27, 200917 Anthony MundineMay 27, 2009 – 2009r08 Peter Manfredo Jr.May 22, 2010 – 2011s09 Avtandil KhurtsidzeMar 13, 2011 – 2011s110 Gennady GolovkinDec 9, 2011 – Sep 15, 2018s1711 Gennady Golovkin (2)Oct 5, 2019 – Jun 14, 2023r212 Chris Eubank Jr.Oct, 12 2024 – present0

Super welterweight Source: No. Name Duration of reign Defenses1 Lonnie BeasleyApr 10, 1993 – 1994r02 Lester EllisJul 17, 1995 – 1995s03 Patrick GoossenJun 26, 1996 – 1996r04 Manny SobralDec 12, 1996 – 1997r15 Adrian StoneApr 15, 2000 – 2001r36 Richard WilliamsDec 1, 2002 – Jun 21, 200337 Sergio MartínezJun 21, 2003 – 2004r28 Mihály KótaiJun 4, 2005 – Mar 3, 200619 Steve ConwayMar 3, 2006 – Jun 3, 2006010 Attila KovácsJun 3, 2006 – 2008s111 Zaurbek BaysangurovDec 4, 2010 – 2012s112 Zaurbek Baysangurov (2)Apr 12, 2014 – 2015s013 Erislandy LaraJun 12, 2015 – Apr 7, 2018414 Jarrett HurdApr 7, 2018 – May 11, 2019115 Julian WilliamsMay 11, 2019 – Jan 18, 2020016 Jeison RosarioJan 18, 2020 – Apr 1, 2020r017 Erislandy Lara (2)Aug 29, 2020 – Sep 1, 2021r018 Sam Eggington Jun 25, 2022 – Oct 8 20220 19 Dennis HoganOct 8, 2022 – May 20, 20230 20 JJ MetcalfMay 20, 2023 – 20240 21 Jorge Garcia PerezJun 15, 2024 – 2024022 Uisma LimaDec 12, 2024 – present 1

Welterweight Source: No. Name Duration of reign Defenses1 Kenny GouldJan 8, 1993 – 1993r02 Johnny BizzarroAug 18, 1993 – Aug 4, 199413 Roger MayweatherAug 4, 1994 – 1995r14 Kip DiggsJun 30, 1995 – 1995r05 Kevin LueshingJul 17, 1996 – Jan 11, 1997s06 José Antonio RiveraApr 25, 1997 – 1998r07 Dingaan ThobelaMar 6, 1999 – 1999r08 Peter MalingaOct 22, 1999 – 2000r09 Willy WiseDec 2, 2000 – Jun 11, 2001010 Jawaid KhaliqJun 11, 2001 – Feb 2006s711 Floyd Mayweather Jr.Apr 8, 2006 – 2007r112 Isaac HlatshwayoMay 12, 2007 – 2008r213 Lovemore NdouJul 11, 2009 – 2010s214 Chris van HeerdenSep 24, 2011 – 2014s215 Ali FunekaNov 15, 2014 – Jul 24, 2015016 Tsiko MulovhedziJul 24, 2015 – 2017s117 Thulani MbengeJun 25, 2018 – Jul 6, 2019118 Sebastian FormellaJul 6, 2019 – Aug 22, 2020s119 Daniyar YeleussinovDec 18, 2021 – Dec 27, 2022s020 Tulani MbengeOct 19, 2024 – Present0

Super lightweight Source: No. Name Duration of reign Defenses1 Mike EvgenApr 9, 1992 – 1992r02 Mike JohnsonFeb 19, 1993 – 1994r13 Roger MayweatherMay 28, 1994 – 1994r04 Lester EllisDec 3, 1994 – 1995r05 Mario MartínezJul 29, 1995 – 1995r06 Darrell HilesSep 23, 1995 – 1995r07 Verdell SmithJan 18, 1996 – 1996r08 Johar Abu LashinFeb 28, 1997 – 1997r09 Israel CardonaApr 25, 1997 – 1997r010 Ener JulioSep 12, 1998 – 1998r111 Newton VillarrealFeb 5, 2000 – Apr 7, 2001212 Billy SchwerApr 7, 2001 – Jul 14, 2001013 Pablo Daniel SarmientoJul 14, 2001 – May 8, 2004314 Colin LynesMay 8, 2004 – 2005r115 Stevie JohnstonJan 27, 2006 – 2006r016 Ricky HattonJan 20, 2007 – May 2, 2009317 Manny PacquiaoMay 2, 2009 – 2010s018 Kaizer MabuzaMar 3, 2012 – Jun 20, 2012019 Khabib AllakhverdievJun 20, 2012 – Apr 12, 2014220 Eduard TroyanovskyApr 10, 2015 – Dec 3, 2016321 Julius IndongoDec 3, 2016 – Aug 7, 2017s122 Mohamed MimouneJan 20, 2018 – Apr 27, 2019s123 Jeremias PonceSep 14, 2019 – May 25, 2021024 Zhankosh TurarovMarch 21, 2023 – 2024125 Adam AzimFebruary 1, 2025 – ?r126 Pierce O'LearyMarch 14, 2026 − August 1, 2026027 Mark ChamberlainAugust 1, 2026 – present0

Lightweight Source: No. Name Duration of reign Defenses1 Anthony BoyleDec 28, 1993 – 1994r02 Amado CabatoDec 11, 1994 – Mar 10, 199503 Lester EllisMar 10, 1995 – 1995r04 Billy IrwinJun 8, 1995 – 1995r05 Leavander JohnsonJul 29, 1995 – 1996r06 Tony PepMar 7, 1996 – 1997r17 Michael AyersMar 12, 1999 – Dec 26, 2001r68 Jason CookNov 8, 2003 – Nov 5, 200419 Aldo Nazareno RíosNov 5, 2004 – 2005r010 Isaac HlatshwayoAug 31, 2005 – 2006r211 Juan DíazSep 6, 2008 – Feb 28, 2009s012 Mlungisi DlaminiOct 31, 2009 – Jan 29, 2010 013 Leonardo ZappavignaMar 6, 2010 – 2010s014 Emiliano MarsiliJan 20, 2012 – 2012s015 Daud YordanJul 6, 2013 – 2014s116 Xolisani NdongeniNov 28, 2015 – 2016s017 Emmanuel TagoeDec 2, 2016 – Jun 13, 2018s118 Jovanni StraffonMay 1, 2021 – Sep 4, 2021019 Maxi HughesSep 4, 2021 – Jul 22, 2023220 George Kambosos JrJul 22, 2023 – May 12, 2024s0

Super featherweight Source: No. Name Duration of reign Defenses1 John RobyApr 3, 1993 – Apr 21, 199402 Jeff MayweatherApr 21, 1994 – Aug 25, 199523 Israel CardonaAug 25, 1995 – 1995r04 Jimmi BredahlMar 29, 1996 – 1996r05 Israel Cardona (2)Apr 12, 1996 – 1996r06 Troy DorseyOct 18, 1996 – 1997r07 Charles ShepherdJul 31, 1999 – Feb 26, 200008 Affif DjeltiFeb 26, 2000 – 2002r39 Cassius BaloyiApr 17, 2002 – Jul 29, 2006510 Gairy St ClairJul 29, 2006 – Nov 4, 2006s011 Cassius Baloyi (2)Feb 3, 2007 – 2007r012 Billy DibJul 30, 2008 – 2008s013 Zolani MaraliApr 2, 2009 – Sep 12, 2009014 Kim Ji-hoonSep 12, 2009 – 2010r015 Will TomlinsonNov 30, 2011 – 2014s316 José PedrazaMar 22, 2014 – 2014s017 Jack AsisApr 11, 2015 – Aug 5, 2016018 Malcolm KlassenAug 5, 2016 – Aug 5, 2017s019 Shavkat RakhimovSep 9, 2017 – Oct 1, 2019r320 Michael MagnesiNov 27, 2020 – Sep 24, 2022121 Anthony CacaceSep 24, 2022 – 2026422 Jono CarrollMar 14, 2026 – present0

Featherweight Source: No. Name Duration of reign Defenses1 Derrick GainerNov 30, 1993 – 1994r02 Radford BeasleySep 26, 1997 – 1998r03 Junior JonesApr 10, 1999 – 1999r04 Marco Antonio BarreraApr 7, 2001 – 2002r05 Naseem HamedMay 18, 2002 – 2002r06 Michael BrodieJun 21, 2003 – 2003r07 Vuyani BunguFeb 7, 2004 – Jun 25, 200508 Thomas MashabaJun 25, 2005 – Mar 7, 200849 Cristóbal CruzMar 7, 2008 – 2008r010 Fernando Beltrán Jr.Aug 22, 2008 – 2009r011 Jackson AsikuNov 6, 2009 – Sep 15, 2010012 Jhonny GonzálezSep 15, 2010 – 2011s013 Daud YordanMay 5, 2012 – Apr 14, 2013114 Simpiwe VetyekaApr 14, 2013 – 2014s115 Lusanda KomanisiJul 18, 2014 – 2016s216 Claudio MarreroApr 29, 2017 – Sep 15, 2017s017 Tugstsogt NyambayarJan 26, 2019 – Feb 8, 2020r018 Jazza DickensOct 15, 2022 – Jul 22, 2023019 Hector Andres SosaJul 22, 2023 – 2024120 Dayan GonzalezDec 06, 2024 – Present0

Super bantamweight Source: No. Name Duration of reign Defenses1 John LoweyApr 20, 1995 – 1995r02 Serhiy DivakovMay 21, 1996 – 1997r03 Patrick MullingsMar 28, 1998 – Aug 8, 199804 Simon RamoniAug 8, 1998 – 2001r35 Paulie AyalaAug 4, 2001 – 2002r16 Zolani MaraliJul 11, 2003 – May 22, 200407 Thomas MashabaMay 22, 2004 – 2005r08 Takalani NdlovuNov 4, 2005 – Jul 14, 2007s39 Mike OliverNov 8, 2007 – 2008r010 Tshifhiwa MunyaiMar 26, 2011 – 2012r011 Alexander BakhtinSep 18, 2012 – Apr 20, 2013r012 Thabo SonjicaJul 6, 2013 – Aug 8, 2014s113 Paulus AmbundaAug 1, 2015 – Jun 11, 2016114 Moises FloresJun 11, 2016 – Jun 17, 2017s015 Paulus AmbundaSep 21, 2018 – May 11, 2019016 Stephen FultonMay 11, 2019 – Jan 25, 2020r017 Ludumo LamatiJun 19, 2021 – May 24, 2022r018 Eric Robles AyalaJul 21, 2023 – 2024r019 Liam DaviesMar 16, 2024 – Nov 2, 2024020 Shabaz MasoudNov 2, 2024 – present 0

Bantamweight Source: No. Name Duration of reign Defenses1 Johnny BredahlFeb 16, 1996 – Jun 5, 1998r72 Noel WildersMar 20, 2000 – 2001r13 José SanjuaneloJul 14, 2001 – Mar 2, 200214 Silence MabuzaMar 2, 2002 – Nov 5, 200565 Rafael MárquezNov 5, 2005 – 2006r16 Silence Mabuza (2)May 12, 2007 – 2009r27 Simpiwe VetyekaJul 11, 2009 – 2010r08 Vic DarchinyanMay 20, 2010 – Dec 11, 2010s09 Vic Darchinyan (2)Apr 23, 2011 – Dec 3, 2011s110 Joseph AgbekoMar 22, 2013 – 2013s011 Juan Carlos PayanoAug 2, 2015 – Jun 18, 2016012 Rau'shee WarrenJun 18, 2016 – Feb 10, 2017s013 Michael DasmariñasApr 20, 2018 – 2019s014 Michell BanquezJul 12, 2019 – 2021s015 Prince PatelDec 19, 2023 – April 1, 2024r0

Super flyweight Source: