2011 World Championships in Athletics
| Host city | Daegu, South Korea |
|---|---|
| Nations | 204 |
| Athletes | 1848 |
| Events | 47 |
| Dates | 27 August – 4 September 2011 |
| Opened by | President Lee Myung-bak |
| Closed by | IAAF President Lamine Diack |
| Main venue | Daegu Stadium |
The 13th IAAF World Championships in Athletics (Korean: 제13회 세계육상선수권대회) was an international athletics competition that was held in Daegu, South Korea. It started on 27 August 2011 and finished on 4 September 2011.
The United States topped the medal standings in the competition with 28 (12 gold, 9 silver, and 7 bronze). During the competition, 41 national records, 4 area records, 3 championship records, and 1 world record was set.
The championships were heavily affected by post-championship doping cases, particularly from the Russian team, who in subsequent years were stripped of eleven medals, seven of them gold.