Estonia competed at the 2011 World Championships in Athletics from 27 August–4 September.

A team of 10 athletes was announced in preparation for the competition.

[1] Selected athletes have achieved one of the competition's qualifying standards.

Javelin thrower Risto Mätas was registered as a reserve athlete.

The following athlete appeared on the preliminary Entry List,[2] but not on the Official Start List of the specific event,[3] resulting in a total number of 9 competitors: The following competitor from Estonia won a medal at the Championships