| World Chess Championship 2005 | |
|---|---|
 Veselin Topalov of Bulgaria, winner of the FIDE World Chess Championship 2005. | |
| Location | Potrero de los Funes, Argentina |
| Dates | 27 September–16 October 2005 |
| Competitors | 8 from 6 nations |
| Winning score | 10 points of 14 |
| Champion | |
 Veselin Topalov | |
The FIDE World Chess Championship 2005 took place in Potrero de los Funes, San Luis Province in Argentina from September 27 to October 16, 2005. It was won by Veselin Topalov.