/
| Champion | Won | Lost | Days |
|---|---|---|---|
| Dmitry Bivol | 22 Feb 2025 | Current | 606 |
| Artur Beterbiev | 18 Jun 2022 | 22 Feb 2025 | 980 |
| Joe Smith, Jr. | 10 Apr 2021 | 18 Jun 2022 | 434 |
| Eleider Álvarez | 4 Aug 2018 | 2 Feb 2019 | 182 |
| Vyacheslav Shabranskyy | 25 Nov 2017 | 4 Aug 2018 | 252 |
| Andre Ward | 19 Nov 2016 | 21 Sept 2017 | 306 |
| Sergey Kovalev | 18 Aug 2013 | 19 Nov 2016 | 1,189 |
| Nathan Cleverly | 19 May 2011 | 18 Aug 2013 | 822 |
| Jürgen Brähmer | 13 Nov 2009 | 19 May 2011 | 552 |
| Zsolt Erdei | 17 Jan 2004 | 13 Nov 2009 | 2,127 |
| Julio César González | 10 Oct 2003 | 17 Jan 2004 | 99 |
| Dariusz Michalczewski | 10 Sept 1994 | 10 Oct 2003 | 3,317 |
| Leeonzer Barber | 9 May 1991 | 10 Sept 1994 | 1,220 |
Built from title bouts on record. Vacated or stripped titles are not visible in bout results, so very recent changes can lag.
