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| Champion | Won | Lost | Days |
|---|---|---|---|
| Sebastian Fundora | 30 Mar 2024 | Current | 936 |
| Jermell Charlo | 21 Dec 2019 | 26 Jan 2024 | 1,497 |
| Tony Harrison | 22 Dec 2018 | 21 Dec 2019 | 364 |
| Jermell Charlo | 21 May 2016 | 22 Dec 2018 | 945 |
| Canelo Álvarez | 5 Mar 2011 | 14 Sept 2013 | 924 |
| Manny Pacquiao | 14 Nov 2010 | 8 Feb 2011 | 86 |
| Sergio Martínez | 21 May 2009 | 16 Jun 2010 | 391 |
| Vernon Forrest | 13 Sept 2008 | 21 May 2009 | 250 |
| Vernon Forrest | 28 Jul 2007 | 7 Jun 2008 | 315 |
| Oscar De La Hoya | 6 May 2006 | 5 May 2007 | 364 |
| Ricardo Mayorga | 13 Aug 2005 | 6 May 2006 | 266 |
| Winky Wright | 13 Mar 2004 | 5 Mar 2005 | 357 |
| Shane Mosley | 13 Sept 2003 | 13 Mar 2004 | 182 |
| Oscar De La Hoya | 28 Jun 2001 | 13 Sept 2003 | 807 |
| Javier Castillejo | 29 Jan 1999 | 28 Jun 2001 | 881 |
| Keith Mullings | 6 Dec 1997 | 29 Jan 1999 | 419 |
| Terry Norris | 19 Aug 1995 | 6 Dec 1997 | 840 |
| Luis Santana | 12 Nov 1994 | 19 Aug 1995 | 280 |
| Simon Brown | 18 Dec 1993 | 7 May 1994 | 140 |
| Terry Norris | 31 Mar 1990 | 18 Dec 1993 | 1,358 |
| John Mugabi | 8 Jul 1989 | 31 Mar 1990 | 266 |
| Donald Curry | 8 Jul 1988 | 11 Feb 1989 | 218 |
| Gianfranco Rosi | 2 Oct 1987 | 8 Jul 1988 | 280 |
| Duane Thomas | 5 Dec 1986 | 12 Jul 1987 | 219 |
| Thomas Hearns | 3 Dec 1982 | 24 Oct 1986 | 1,421 |
| Wilfred Benítez | 23 May 1981 | 3 Dec 1982 | 559 |
| Maurice Hope | 4 Mar 1979 | 23 May 1981 | 811 |
| Rocky Mattioli | 6 Aug 1977 | 4 Mar 1979 | 575 |
| Eckhard Dagge | 18 Jun 1976 | 6 Aug 1977 | 414 |
| Elisha Obed | 13 Nov 1975 | 18 Jun 1976 | 218 |
| Oscar Albarado | 4 Jun 1974 | 21 Jan 1975 | 231 |
| Koichi Wajima | 31 Oct 1971 | 4 Jun 1974 | 947 |
| Carmelo Bossi | 9 Jul 1970 | 31 Oct 1971 | 479 |
| Freddie Little | 17 Mar 1969 | 9 Jul 1970 | 479 |
| Kim Ki-soo | 25 Jun 1966 | 26 May 1968 | 701 |
| Nino Benvenuti | 18 Jun 1965 | 25 Jun 1966 | 372 |
Built from title bouts on record. Vacated or stripped titles are not visible in bout results, so very recent changes can lag.