Costa Rica at the 2012 Summer Olympics

Costa Rica competed at the 2012 Summer Olympics in London from 27 July to 12 August 2012. This was the nation's fourteenth appearance at the Olympics, excluding four occasions from its national debut in 1936.

Comité Olímpico de Costa Rica sent a total of 11 athletes to the Games, 8 men and 3 women, to compete in 6 sports. Three of its athletes made their second consecutive Olympic appearance, including marathon runner Gabriela Traña, who was also the nation's flag bearer at the opening ceremony. Costa Rica, however, failed to win a single Olympic medal for the third consecutive time.