List of undefeated world boxing champions

This is a list of world champions in professional boxing who retired undefeated, either during or after a title reign(s). It excludes current titleholders. Each champion's record is shown in the following format: wins–losses–draws, no contests.

Undefeated male champions As of March 2026, there have been 16 male boxing champions who finished their careers undefeated. The list includes boxers who were recognized by public acclamation before the era of sanctioning bodies and the creation of The Ring magazine, as well as boxers recognized by the NYSAC. The WBA (as the NBA), the WBC, the IBF, and the WBO began recognizing champions in 1921, 1963, 1983, and 1988 respectively, while The Ring began to do so in 1922. Boxer Record (W-L-T) Weight class (boxing) Title(s) held Championship years Notes61–0–10, 1NCBantamweightWorld1894–18996Fought when the bantamweight category was not fully established. The weight limits in the United States shifted during his career. Super middleweightWBO1997–200821Vacated title to move up to light heavyweight.IBF20061Vacated title to fight Peter Manfredo Jr. instead of #1 contender Robert Stieglitz.The Ring2006–20083Vacated titles to move up to light heavyweight.WBA, WBC2007–20080Light heavyweightThe Ring20081Retired and vacated title.42–0LightweightWBO2014–20152Vacated title to move up to light welterweight.The Ring2014–20150Light welterweightWBO2015–20176Vacated title to move up to welterweight.WBC, The Ring2016–20183WBA (Super), IBF20170WelterweightWBO2018–20247Vacated title to move up to light middleweight.WBA (Super), WBC, IBF, The Ring2023–20240Light middleweightWBA2024–20250Also won the WBO interim title. Stripped and vacated of both titles to move up to super middleweight.Super middleweightWBC, IBF, WBO20250Stripped of the WBC title 13 days before retiring. WBA (Super), The Ring2025–20260Armando Reséndiz elevated to full WBA champion on January 1, 2026.16–0–2 Super bantamweightIBF1985–1986428–0WelterweightWBO19971Retired from boxing due to an injury.51–0–1 MinimumweightWBC1990–199822Vacated title to move up to light flyweight.WBO1997–19980Unified WBC and WBO titles. Stripped of WBO title for saying he wanted to give the belt to his father.WBA19980Vacated title to move up to junior flyweight.Light flyweightIBF1999–2002249–0HeavyweightWorld1952–1956626–0–1 Light welterweightIBF19871Retired from boxing due to epilepsy.Undefeated Floyd Mayweather confirms retirement, Sky Sports, 13/09/201550–0Super featherweightWBC1998–20028Vacated title to move up to lightweight.LightweightWBC, The Ring2002–20043Vacated title to move up to light welterweight.WBC 2005–20060Vacated title to move up to welterweight.IBF20060Vacated title to challenge Carlos Baldomir for his WBC title.WBC, The Ring2006–2008, 2011–20156Retired in 2008, few months after defeating Ricky Hatton. Declared Emeritus Champion by the WBC. Reclaimed the title in 2011 by defeating Victor Ortiz. Retired at 49–0 in 2015; returned in 2017 for non-title McGregor fight and then retired again.WBA2014–20153WBC2007, 2013–201512012–201527–0–10 LightweightWorld1886–18939 Title defences consist of seven wins and two draws.34–0IBF1998–200421WBA2003–20044Defended IBF title and defeated WBA champion to become WBA Super champion.Dmitry Pirog20–0MiddleweightWBO2010–20123Retired from boxing due to chronic spinal injuries.31–0WBO1998–20014Vacated title to move up to middleweight.MiddleweightWBO20020Won WBO interim middleweight title in 2001 and the outright title in 2002. Stripped of title at 22–0 when he was unable to defend it due to injuries suffered in a car crash. Had others non-title fights before retiring.24–0FlyweightIBF1992–19945Retired at 21–0 and then made a comeback.27–0WBA2006–20084Vacated title to move up to lightweight.LightweightWBC2009–20102Vacated title to move up to light welterweight. Committed suicide after allegedly killing his wife in 2010. All 27 fights were knockout wins.32–0WBA2009–20156Vacated titles in 2015 to move up to light heavyweight.WBC, The Ring2011–20151 (WBC), 2 (The Ring)WBA, WBO, IBF, The Ring2016–20171 (WBA, WBO, IBF), 0 (The Ring)

Undefeated female champions As of March 2026, 24 female champions have finished their careers undefeated. Includes world titles from sanctioning agencies outside of WBA, WBC, WBO, IBF, and also outside of The Ring. Female world titles were inaugurated by the WBA, the WBC, the WBO, and the IBF in 2004, 2005, 2009, and 2010 respectively. The Ring began awarding titles to women in 2019 and six of the fifteen weight classes are still uninaugurated (as of September 30, 2022). Boxer Record Title(s) Notes21–0Super bantamweightWIBF2000–200135–0–1 FlyweightWBO20191Retired due to medical concerns.Laila Ali24–0Super middleweightIBA, WIBF2002–20044 (IBA), 2 (WIBF)Inaugural IBA women's super-middleweight title.WIBA2002–20075WBC2006–20072Inaugural WBC women's super-middleweight title.Light heavyweightWIBF20040Natascha Ragosina22–0Super middleweightWIBF2005–200910GBU2006–20097WBA, WBC, WIBA2007–20096 (WBA), 4 (WBC), 2 (WIBA)Inaugural WBA women's super-middleweight title.IWBF2008–20090HeavyweightWIBF, WBF20090Won the inaugural WBF women's heavyweight title, and the only title fight in the division, that was until Clarresa Shields won the Vacant title in July 27 2024 against Vanessa Lepage-Joanisse.Lucia Rijker17–0Super lightweight, Junior welterweightWIBF, WIBO1997–19980Kara Ro18–0LightweightWIBA20050Vacated title.Wang Ya Nan8–0MiddleweightWIBA2007–20093WBC2008–20092Seniesa Estrada26–0Mini flyweight, Light flyweight, Flyweight WBC, WBA, WBO, IBF, The Ring2018–20248Ryu Myung-Ok5–0–1Super flyweightWBC2005 2007-20082Title vacated due to inactivity.Kim Kwang-Ok5–0BantamweightWBC2005-20062Title vacated due to inactivity.Eun Soon-Choi3‐0Light flyweightWBC2005-20060Title vacated due to inactivity.Mako Yamada7–0Mini flyweightWBO20140Yamada submitted a retirement notification to the Japanese Boxing Commission on 31 May 2014. The belt was vacated on the same day.Kasumi Saeki4–0Mini flyweightWBO20190Gao Li Jun3–0FeatherweightWBA20060Emanuela Pantani10–0BantamweightWBA20080Alejandra Jiménez12–0–1 1 NCHeavyweightWBC2016-20172Giselle Salandy16–0Super welterweightWBC, WBA2006–20095Salandy died in a motor vehicle collision on the morning of 4 January 2009IWBF2006–20092WIBA2007–20093WIBF2008–20091Paola Gabriela Casalinuovo12–0Super welterweightIBF20141Jenifer Alcorn18–0LightweightWIBF2002–20040IWBF2003–20040WIBA2003–20040Clara Lescurat11-0Super flyweightWBA2022–20244Flor Maria Delgado12-0HeavyweightWIBA2000-20011Carolina Rodriguez17-0BantamweightIBF2014-20153Valerie Henin2-0-1Super WelterweightWIBF19960Bettina Csabi28-0-0 1 NCSuper flyweight BantamweightWIBF, GBU2004-20050WIBF, GBU2004-20064 (WIBF) 5 (GBU)

See also List of current world boxing champions List of current female world boxing champions Longest reigning heavyweight champions

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