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

A team of 8 athletes was announced to represent the country in the event.

The team includes Pichet Krungget invited by the IPC for the 400m T53 (wheelchair) men exhibition event.

[1] The following athlete appeared on the preliminary Entry List,[1] but not on the Official Start List of the specific event,[2] resulting in a total number of 6 competitors: Heptathlon