List of undefeated world boxing champions
Updated: 11/4/2025, 4:29:35 PM Wikipedia source
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.
Tables
· Undefeated male champions
Jimmy Barry
Jimmy Barry
Boxer
Jimmy Barry
Record (W-L-T)
61–0–10, 1NC
Weight class (boxing)
Bantamweight
Title(s) held
World
Championship years
1894–1899
Title defenses
6
Notes
Fought when the bantamweight category was not fully established. The weight limits in the United States shifted during his career.
Joe Calzaghe
Joe Calzaghe
Boxer
Joe Calzaghe
Record (W-L-T)
46–0
Weight class (boxing)
Super middleweight
Title(s) held
WBO
Championship years
1997–2008
Title defenses
21
Notes
Vacated title to move up to light heavyweight.
IBF
IBF
Boxer
IBF
Record (W-L-T)
2006
Weight class (boxing)
1
Title(s) held
Vacated title to fight Peter Manfredo Jr. instead of #1 contender Robert Stieglitz.
The Ring
The Ring
Boxer
The Ring
Record (W-L-T)
2006–2008
Weight class (boxing)
3
Title(s) held
Vacated titles to move up to light heavyweight.
WBA, WBC
WBA, WBC
Boxer
WBA, WBC
Record (W-L-T)
2007–2008
Weight class (boxing)
0
Light heavyweight
Light heavyweight
Boxer
Light heavyweight
Record (W-L-T)
The Ring
Weight class (boxing)
2008
Title(s) held
1
Championship years
Retired and vacated title.
Kim Ji-won
Kim Ji-won
Boxer
Kim Ji-won
Record (W-L-T)
16–0–2
Weight class (boxing)
Super bantamweight
Title(s) held
IBF
Championship years
1985–1986
Title defenses
4
Mihai Leu
Mihai Leu
Boxer
Mihai Leu
Record (W-L-T)
28–0
Weight class (boxing)
Welterweight
Title(s) held
WBO
Championship years
1997
Title defenses
1
Notes
Retired from boxing due to an injury.
Ricardo López
Ricardo López
Boxer
Ricardo López
Record (W-L-T)
51–0–1
Weight class (boxing)
Minimumweight
Title(s) held
WBC
Championship years
1990–1998
Title defenses
22
Notes
Vacated title to move up to light flyweight.
WBO
WBO
Boxer
WBO
Record (W-L-T)
1997–1998
Weight class (boxing)
0
Title(s) held
Unified WBC and WBO titles. Stripped of WBO title for saying he wanted to give the belt to his father.
WBA
WBA
Boxer
WBA
Record (W-L-T)
1998
Weight class (boxing)
0
Title(s) held
Vacated title to move up to junior flyweight.
Light flyweight
Light flyweight
Boxer
Light flyweight
Record (W-L-T)
IBF
Weight class (boxing)
1999–2002
Title(s) held
2
Rocky Marciano
Rocky Marciano
Boxer
Rocky Marciano
Record (W-L-T)
49–0
Weight class (boxing)
Heavyweight
Title(s) held
World
Championship years
1952–1956
Title defenses
6
Terry Marsh
Terry Marsh
Boxer
Terry Marsh
Record (W-L-T)
26–0–1
Weight class (boxing)
Light welterweight
Title(s) held
IBF
Championship years
1987
Title defenses
1
Notes
Retired from boxing due to epilepsy.
Floyd Mayweather Jr.
Floyd Mayweather Jr.
Boxer
Floyd Mayweather Jr.
Record (W-L-T)
50–0
Weight class (boxing)
Super featherweight
Title(s) held
WBC
Championship years
1998–2002
Title defenses
8
Notes
Vacated title to move up to lightweight.
Lightweight
Lightweight
Boxer
Lightweight
Record (W-L-T)
WBC, The Ring
Weight class (boxing)
2002–2004
Title(s) held
3
Championship years
Vacated title to move up to light welterweight.
Light welterweight
Light welterweight
Boxer
Light welterweight
Record (W-L-T)
WBC
Weight class (boxing)
2005–2006
Title(s) held
0
Championship years
Vacated title to move up to welterweight.
Welterweight
Welterweight
Boxer
Welterweight
Record (W-L-T)
IBF
Weight class (boxing)
2006
Title(s) held
0
Championship years
Vacated title to challenge Carlos Baldomir for his WBC title.
WBC, The Ring
WBC, The Ring
Boxer
WBC, The Ring
Record (W-L-T)
2006–2008, 2011–2015
Weight class (boxing)
6
Title(s) held
Retired 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.
WBA
WBA
Boxer
WBA
Record (W-L-T)
2014–2015
Weight class (boxing)
3
Light middleweight
Light middleweight
Boxer
Light middleweight
Record (W-L-T)
WBC
Weight class (boxing)
2007, 2013–2015
Title(s) held
1
Jack McAuliffe
Jack McAuliffe
Boxer
Jack McAuliffe
Record (W-L-T)
27–0–10
Weight class (boxing)
Lightweight
Title(s) held
World
Championship years
1886–1893
Title defenses
9
Notes
Title defences consist of seven wins and two draws.
Sven Ottke
Sven Ottke
Boxer
Sven Ottke
Record (W-L-T)
34–0
Weight class (boxing)
Super middleweight
Title(s) held
IBF
Championship years
1998–2004
Title defenses
21
WBA
WBA
Boxer
WBA
Record (W-L-T)
2003–2004
Weight class (boxing)
4
Title(s) held
Defended IBF title and defeated WBA champion to become WBA Super champion.
Dmitry Pirog
Dmitry Pirog
Boxer
Dmitry Pirog
Record (W-L-T)
20–0
Weight class (boxing)
Middleweight
Title(s) held
WBO
Championship years
2010–2012
Title defenses
3
Notes
Retired from boxing due to chronic spinal injuries.
Harry Simon
Harry Simon
Boxer
Harry Simon
Record (W-L-T)
31–0
Weight class (boxing)
Light middleweight
Title(s) held
WBO
Championship years
1998–2001
Title defenses
4
Notes
Vacated title to move up to middleweight.
Middleweight
Middleweight
Boxer
Middleweight
Record (W-L-T)
WBO
Weight class (boxing)
2002
Title(s) held
0
Championship years
Won 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.
Pichit Sitbangprachan
Pichit Sitbangprachan
Boxer
Pichit Sitbangprachan
Record (W-L-T)
24–0
Weight class (boxing)
Flyweight
Title(s) held
IBF
Championship years
1992–1994
Title defenses
5
Notes
Retired at 21–0 and then made a comeback.
Edwin Valero
Edwin Valero
Boxer
Edwin Valero
Record (W-L-T)
27–0
Weight class (boxing)
Super featherweight
Title(s) held
WBA
Championship years
2006–2008
Title defenses
4
Notes
Vacated title to move up to lightweight.
Lightweight
Lightweight
Boxer
Lightweight
Record (W-L-T)
WBC
Weight class (boxing)
2009–2010
Title(s) held
2
Championship years
Vacated title to move up to light welterweight. Committed suicide after allegedly killing his wife in 2010. All 27 fights were knockout wins.
Andre Ward
Andre Ward
Boxer
Andre Ward
Record (W-L-T)
32–0
Weight class (boxing)
Super middleweight
Title(s) held
WBA
Championship years
2009–2015
Title defenses
6
Notes
Vacated titles in 2015 to move up to light heavyweight.
WBC, The Ring
WBC, The Ring
Boxer
WBC, The Ring
Record (W-L-T)
2011–2015
Weight class (boxing)
1 (WBC), 2 (The Ring)
Light heavyweight
Light heavyweight
Boxer
Light heavyweight
Record (W-L-T)
WBA, WBO, IBF, The Ring
Weight class (boxing)
2016–2017
Title(s) held
1 (WBA, WBO, IBF), 0 (The Ring)
| Boxer | Record (W-L-T) | Weight class (boxing) | Title(s) held | Championship years | Title defenses | Notes |
| Jimmy Barry | 61–0–10, 1NC | Bantamweight | World | 1894–1899 | 6 | Fought when the bantamweight category was not fully established. The weight limits in the United States shifted during his career. |
| Joe Calzaghe | 46–0 | Super middleweight | WBO | 1997–2008 | 21 | Vacated title to move up to light heavyweight. |
| IBF | 2006 | 1 | Vacated title to fight Peter Manfredo Jr. instead of contender Robert Stieglitz. | |||
| The Ring | 2006–2008 | 3 | Vacated titles to move up to light heavyweight. | |||
| WBA, WBC | 2007–2008 | 0 | ||||
| Light heavyweight | The Ring | 2008 | 1 | Retired and vacated title. | ||
| Kim Ji-won | 16–0–2 | Super bantamweight | IBF | 1985–1986 | 4 | |
| Mihai Leu | 28–0 | Welterweight | WBO | 1997 | 1 | Retired from boxing due to an injury. |
| Ricardo López | 51–0–1 | Minimumweight | WBC | 1990–1998 | 22 | Vacated title to move up to light flyweight. |
| WBO | 1997–1998 | 0 | Unified WBC and WBO titles. Stripped of WBO title for saying he wanted to give the belt to his father. | |||
| WBA | 1998 | 0 | Vacated title to move up to junior flyweight. | |||
| Light flyweight | IBF | 1999–2002 | 2 | |||
| Rocky Marciano | 49–0 | Heavyweight | World | 1952–1956 | 6 | |
| Terry Marsh | 26–0–1 | Light welterweight | IBF | 1987 | 1 | Retired from boxing due to epilepsy. |
| Floyd Mayweather Jr. | 50–0 | Super featherweight | WBC | 1998–2002 | 8 | Vacated title to move up to lightweight. |
| Lightweight | WBC, The Ring | 2002–2004 | 3 | Vacated title to move up to light welterweight. | ||
| Light welterweight | WBC | 2005–2006 | 0 | Vacated title to move up to welterweight. | ||
| Welterweight | IBF | 2006 | 0 | Vacated title to challenge Carlos Baldomir for his WBC title. | ||
| WBC, The Ring | 2006–2008, 2011–2015 | 6 | Retired 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. | |||
| WBA | 2014–2015 | 3 | ||||
| Light middleweight | WBC | 2007, 2013–2015 | 1 | |||
| 2012–2015 | ||||||
| Jack McAuliffe | 27–0–10 | Lightweight | World | 1886–1893 | 9 | Title defences consist of seven wins and two draws. |
| Sven Ottke | 34–0 | Super middleweight | IBF | 1998–2004 | 21 | |
| WBA | 2003–2004 | 4 | Defended IBF title and defeated WBA champion to become WBA Super champion. | |||
| Dmitry Pirog | 20–0 | Middleweight | WBO | 2010–2012 | 3 | Retired from boxing due to chronic spinal injuries. |
| Harry Simon | 31–0 | Light middleweight | WBO | 1998–2001 | 4 | Vacated title to move up to middleweight. |
| Middleweight | WBO | 2002 | 0 | Won 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. | ||
| Pichit Sitbangprachan | 24–0 | Flyweight | IBF | 1992–1994 | 5 | Retired at 21–0 and then made a comeback. |
| Edwin Valero | 27–0 | Super featherweight | WBA | 2006–2008 | 4 | Vacated title to move up to lightweight. |
| Lightweight | WBC | 2009–2010 | 2 | Vacated title to move up to light welterweight. Committed suicide after allegedly killing his wife in 2010. All 27 fights were knockout wins. | ||
| Andre Ward | 32–0 | Super middleweight | WBA | 2009–2015 | 6 | Vacated titles in 2015 to move up to light heavyweight. |
| WBC, The Ring | 2011–2015 | 1 (WBC), 2 (The Ring) | ||||
| Light heavyweight | WBA, WBO, IBF, The Ring | 2016–2017 | 1 (WBA, WBO, IBF), 0 (The Ring) |
· Undefeated female champions
Michele Aboro
Michele Aboro
Boxer
Michele Aboro
Record
21–0
Weight class
Super bantamweight
Title(s)
WIBF
Championship years
2000–2001
Title defenses
3
Nicola Adams
Nicola Adams
Boxer
Nicola Adams
Record
5–0–1
Weight class
Flyweight
Title(s)
WBO
Championship years
2019
Title defenses
1
Notes
Retired due to medical concerns.
Laila Ali
Laila Ali
Boxer
Laila Ali
Record
24–0
Weight class
Super middleweight
Title(s)
IBA, WIBF
Championship years
2002–2004
Title defenses
4 (IBA), 2 (WIBF)
Notes
Inaugural IBA women's super-middleweight title.
WIBA
WIBA
Boxer
WIBA
Record
2002–2007
Weight class
5
WBC
WBC
Boxer
WBC
Record
2006–2007
Weight class
2
Title(s)
Inaugural WBC women's super-middleweight title.
Light heavyweight
Light heavyweight
Boxer
Light heavyweight
Record
WIBF
Weight class
2004
Title(s)
0
Natascha Ragosina
Natascha Ragosina
Boxer
Natascha Ragosina
Record
22–0
Weight class
Super middleweight
Title(s)
WIBF
Championship years
2005–2009
Title defenses
10
GBU
GBU
Boxer
GBU
Record
2006–2009
Weight class
7
WBA, WBC, WIBA
WBA, WBC, WIBA
Boxer
WBA, WBC, WIBA
Record
2007–2009
Weight class
6 (WBA), 4 (WBC), 2 (WIBA)
Title(s)
Inaugural WBA women's super-middleweight title.
IWBF
IWBF
Boxer
IWBF
Record
2008–2009
Weight class
0
Heavyweight
Heavyweight
Boxer
Heavyweight
Record
WIBF, WBF
Weight class
2009
Title(s)
0
Championship years
Won 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 Rijker
Lucia Rijker
Boxer
Lucia Rijker
Record
17–0
Weight class
Super lightweight, Junior welterweight
Title(s)
WIBF, WIBO
Championship years
1997–1998
Title defenses
0
Kara Ro
Kara Ro
Boxer
Kara Ro
Record
18–0
Weight class
Lightweight
Title(s)
WIBA
Championship years
2005
Title defenses
0
Notes
Vacated title.
Wang Ya Nan
Wang Ya Nan
Boxer
Wang Ya Nan
Record
8–0
Weight class
Middleweight
Title(s)
WIBA
Championship years
2007–2009
Title defenses
3
WBC
WBC
Boxer
WBC
Record
2008–2009
Weight class
2
Seniesa Estrada
Seniesa Estrada
Boxer
Seniesa Estrada
Record
26–0
Weight class
Mini flyweight, Light flyweight, Flyweight
Title(s)
WBC, WBA, WBO, IBF, The Ring
Championship years
2018–2024
Title defenses
8
Ryu Myung-Ok
Ryu Myung-Ok
Boxer
Ryu Myung-Ok
Record
5–0–1
Weight class
Super flyweight
Title(s)
WBC
Championship years
2005 2007-2008
Title defenses
2
Notes
Title vacated due to inactivity.
Kim Kwang-Ok
Kim Kwang-Ok
Boxer
Kim Kwang-Ok
Record
5–0
Weight class
Bantamweight
Title(s)
WBC
Championship years
2005-2006
Title defenses
2
Notes
Title vacated due to inactivity.
Eun Soon-Choi
Eun Soon-Choi
Boxer
Eun Soon-Choi
Record
3‐0
Weight class
Light flyweight
Title(s)
WBC
Championship years
2005-2006
Title defenses
0
Notes
Title vacated due to inactivity.
Mako Yamada
Mako Yamada
Boxer
Mako Yamada
Record
7–0
Weight class
Mini flyweight
Title(s)
WBO
Championship years
2014
Title defenses
0
Notes
Yamada submitted a retirement notification to the Japanese Boxing Commission on 31 May 2014. The belt was vacated on the same day.
Kasumi Saeki
Kasumi Saeki
Boxer
Kasumi Saeki
Record
4–0
Weight class
Mini flyweight
Title(s)
WBO
Championship years
2019
Title defenses
0
Gao Li Jun
Gao Li Jun
Boxer
Gao Li Jun
Record
3–0
Weight class
Featherweight
Title(s)
WBA
Championship years
2006
Title defenses
0
Emanuela Pantani
Emanuela Pantani
Boxer
Emanuela Pantani
Record
10–0
Weight class
Bantamweight
Title(s)
WBA
Championship years
2008
Title defenses
0
Alejandra Jiménez
Alejandra Jiménez
Boxer
Alejandra Jiménez
Record
12–0–1 1 NC
Weight class
Heavyweight
Title(s)
WBC
Championship years
2016-2017
Title defenses
2
Giselle Salandy
Giselle Salandy
Boxer
Giselle Salandy
Record
16–0
Weight class
Super welterweight
Title(s)
WBC, WBA
Championship years
2006-2009
Title defenses
5
Notes
Salandy died in a motor vehicle collision on the morning of 4 January 2009
IWBF
IWBF
Boxer
IWBF
Record
2006-2009
Weight class
2
WIBA
WIBA
Boxer
WIBA
Record
2007-2009
Weight class
3
WIBF
WIBF
Boxer
WIBF
Record
2008-2009
Weight class
1
Paola Gabriela Casalinuovo
Paola Gabriela Casalinuovo
Boxer
Paola Gabriela Casalinuovo
Record
12–0
Weight class
Super welterweight
Title(s)
IBF
Championship years
2014
Title defenses
1
Jenifer Alcorn
Jenifer Alcorn
Boxer
Jenifer Alcorn
Record
18–0
Weight class
Lightweight
Title(s)
WIBF
Championship years
2002-2004
Title defenses
0
IWBF
IWBF
Boxer
IWBF
Record
2003-2004
Weight class
0
WIBA
WIBA
Boxer
WIBA
Record
2003-2004
Weight class
0
| Boxer | Record | Weight class | Title(s) | Championship years | Title defenses | Notes |
| Michele Aboro | 21–0 | Super bantamweight | WIBF | 2000–2001 | 3 | |
| Nicola Adams | 5–0–1 | Flyweight | WBO | 2019 | 1 | Retired due to medical concerns. |
| Laila Ali | 24–0 | Super middleweight | IBA, WIBF | 2002–2004 | 4 (IBA), 2 (WIBF) | Inaugural IBA women's super-middleweight title. |
| WIBA | 2002–2007 | 5 | ||||
| WBC | 2006–2007 | 2 | Inaugural WBC women's super-middleweight title. | |||
| Light heavyweight | WIBF | 2004 | 0 | |||
| Natascha Ragosina | 22–0 | Super middleweight | WIBF | 2005–2009 | 10 | |
| GBU | 2006–2009 | 7 | ||||
| WBA, WBC, WIBA | 2007–2009 | 6 (WBA), 4 (WBC), 2 (WIBA) | Inaugural WBA women's super-middleweight title. | |||
| IWBF | 2008–2009 | 0 | ||||
| Heavyweight | WIBF, WBF | 2009 | 0 | Won 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 Rijker | 17–0 | Super lightweight, Junior welterweight | WIBF, WIBO | 1997–1998 | 0 | |
| Kara Ro | 18–0 | Lightweight | WIBA | 2005 | 0 | Vacated title. |
| Wang Ya Nan | 8–0 | Middleweight | WIBA | 2007–2009 | 3 | |
| WBC | 2008–2009 | 2 | ||||
| Seniesa Estrada | 26–0 | Mini flyweight, Light flyweight, Flyweight | WBC, WBA, WBO, IBF, The Ring | 2018–2024 | 8 | |
| Ryu Myung-Ok | 5–0–1 | Super flyweight | WBC | 2005 2007-2008 | 2 | Title vacated due to inactivity. |
| Kim Kwang-Ok | 5–0 | Bantamweight | WBC | 2005-2006 | 2 | Title vacated due to inactivity. |
| Eun Soon-Choi | 3‐0 | Light flyweight | WBC | 2005-2006 | 0 | Title vacated due to inactivity. |
| Mako Yamada | 7–0 | Mini flyweight | WBO | 2014 | 0 | Yamada submitted a retirement notification to the Japanese Boxing Commission on 31 May 2014. The belt was vacated on the same day. |
| Kasumi Saeki | 4–0 | Mini flyweight | WBO | 2019 | 0 | |
| Gao Li Jun | 3–0 | Featherweight | WBA | 2006 | 0 | |
| Emanuela Pantani | 10–0 | Bantamweight | WBA | 2008 | 0 | |
| Alejandra Jiménez | 12–0–1 1 NC | Heavyweight | WBC | 2016-2017 | 2 | |
| Giselle Salandy | 16–0 | Super welterweight | WBC, WBA | 2006-2009 | 5 | Salandy died in a motor vehicle collision on the morning of 4 January 2009 |
| IWBF | 2006-2009 | 2 | ||||
| WIBA | 2007-2009 | 3 | ||||
| WIBF | 2008-2009 | 1 | ||||
| Paola Gabriela Casalinuovo | 12–0 | Super welterweight | IBF | 2014 | 1 | |
| Jenifer Alcorn | 18–0 | Lightweight | WIBF | 2002-2004 | 0 | |
| IWBF | 2003-2004 | 0 | ||||
| WIBA | 2003-2004 | 0 |
References
- "Jimmy Barry"http://www.cyberboxingzone.com/boxing/barry-j.htm
- "Undefeated Calzaghe quits boxing"https://news.bbc.co.uk/sport2/hi/boxing/7871918.stm
- "US elite join race for Calzaghe"https://news.bbc.co.uk/sport2/hi/boxing/7732233.stm
- Bleacher Reporthttp://bleacherreport.com/articles/712971-david-haye-and-the-seven-greatest-fighters-to-retire-with-less-than-30-fights/page/8
- The New York Timeshttps://www.nytimes.com/1997/12/20/sports/plus-boxing-jamili-takes-strawweight-title.html
- "Undefeated heavyweight boxing champion, boxing"http://www.guinnessworldrecords.com/records-3000/undefeated-heavyweight-world-champion-boxing/
- Undefeated Floyd Mayweather confirms retirement, Sky Sports, 13/09/2015http://www.skysports.com/boxing/news/12183/9989558/floyd-mayweather-confirms-he-will-now-retire
- "Jack McAuliffe"http://www.cyberboxingzone.com/boxing/mcaul.htm
- The Ring magazinehttp://ringtv.craveonline.com/blog/123401-10-boxers-who-finished-careers-undefeated
- Bleacher Reporthttp://bleacherreport.com/articles/712971-david-haye-and-the-seven-greatest-fighters-to-retire-with-less-than-30-fights/page/2
- The Guardianhttps://www.theguardian.com/sport/2017/sep/21/andre-ward-retirement
- Women Boxinghttps://www.womenboxing.com/NEWS2014/news082514where-are-they-now-michele-aboro.htm
- "Nicola Adams: Two-time Olympic champion retires over fears for her sight"https://www.bbc.co.uk/sport/boxing/50313580