| Ruslan Ponomariov Руслан Пономарьов | |
|---|---|
 Ponomariov in 2008 | |
| Full name | Ruslan Olehovych Ponomariov |
| Country | Ukraine |
| Born | 11 October 1983 Horlivka, Ukrainian SSR, Soviet Union |
| Title | Grandmaster (1998) |
| World Champion | 2002–2004 (FIDE) |
| FIDE rating | 2653 (November 2024) |
| Peak rating | 2764 (July 2011) |
| Ranking | No. 76 (November 2024) |
| Peak ranking | No. 6 (April 2002) |
Ruslan Olehovych Ponomariov (Ukrainian: Русла́н Оле́гович Пономарьо́в; born 11 October 1983) is a Ukrainian chess grandmaster. He was FIDE World Chess Champion from 2002 to 2004. He won the Ukrainian Chess Championship in 2011.
He was runner-up in the Chess World Cup 2005 and Chess World Cup 2009, while reaching the semi-finals in 2011 and the quarterfinals in 2007.