/
| Champion | Won | Lost | Days |
|---|---|---|---|
| Filip Hrgović | 29 Aug 2026 | Current | 52 |
| Oleksandr Usyk | 19 Jul 2025 | 26 Jun 2026 | 342 |
| Daniel Dubois | 26 Jun 2024 | 19 Jul 2025 | 388 |
| Oleksandr Usyk | 25 Sept 2021 | 25 Jun 2024 | 1,004 |
| Anthony Joshua | 7 Dec 2019 | 25 Sept 2021 | 658 |
| Anthony Joshua | 9 Apr 2016 | 1 Jun 2019 | 1,148 |
| Wladimir Klitschko | 22 Apr 2006 | 28 Nov 2015 | 3,507 |
| Chris Byrd | 14 Dec 2002 | 22 Apr 2006 | 1,225 |
| Lennox Lewis | 17 Nov 2001 | 5 Sept 2002 | 292 |
| Lennox Lewis | 13 Nov 1999 | 22 Apr 2001 | 526 |
| Evander Holyfield | 8 Nov 1997 | 13 Nov 1999 | 735 |
| Axel Schulz | 22 Jun 1996 | 8 Nov 1997 | 504 |
| George Foreman | 5 Nov 1994 | 29 Jun 1995 | 236 |
| Evander Holyfield | 6 Nov 1993 | 22 Apr 1994 | 167 |
| Riddick Bowe | 13 Nov 1992 | 6 Nov 1993 | 358 |
| Evander Holyfield | 25 Oct 1990 | 13 Nov 1992 | 750 |
| Mike Tyson | 1 Aug 1987 | 11 Feb 1990 | 925 |
| Michael Spinks | 21 Sept 1985 | 26 Feb 1987 | 523 |
| Larry Holmes | 11 Dec 1983 | 21 Sept 1985 | 650 |
Built from title bouts on record. Vacated or stripped titles are not visible in bout results, so very recent changes can lag.
