Indonesia competed at the 2012 Summer Olympics in London, United Kingdom from July 27 to August 12, 2012.

Backstroke swimmer I Gede Siman Sudartawa, the youngest male athlete of the team, was Indonesia's flag bearer at the opening ceremony.

Weightlifters Eko Yuli Irawan and Triyatno managed to repeat their Olympic medals from Beijing.

[1] Indonesia also left the Olympic Games with a controversy, surrounding the athletes' sporting performance.

Badminton doubles pair Meiliana Jauhari and Greysia Polii were among the eight athletes who disqualified from the tournament, after being found guilty of "not using best efforts" and "conducting oneself in a manner that is clearly abusive or detrimental to the sport" by playing to lose matches in order to manipulate the draw for the knockout stage.