Most heavyweight professional boxing victories by siblings
- Who
- Vitali Klitschko, Wladimir Klitschko
- What
- 99 total number
- Where
- Ukraine
- When
- 05 December 2011
The most career heavyweight professional boxing victories by siblings is 99 by Wladimir and Vitali Klitschko (both Ukraine) as of 5 December 2011.
Wladimir, the younger of the two, has contributed 56 victories against three defeats, while Vitali has added 43 wins against two defeats. Each began his professional career on 16 November 1996 and the brothers have combined to hold every major boxing heavyweight title in the world simultaneously.