Ireland at the 2011 World Championships in Athletics

Ireland competed at the 2011 World Championships in Athletics from August 27 to September 4 in Daegu, South Korea.

Team selection
A team of 17 athletes was announced to represent the country in the event, although just before the event began Robert Heffernan pulled out following the death of his mother. The team was led by race walker Olive Loughnane and sprinter Paul Hession.

The following athletes appeared on the preliminary Entry List, but not on the Official Start List of the specific event, resulting in a total number of 16 competitors: