Indonesia competed at the 2012 Summer Olympics in London, United Kingdom from July 27 to August 12, 2012. This was the nation's fourteenth appearance at the Olympics, having not competed at the 1964 Summer Olympics in Tokyo and the 1980 Summer Olympics in Moscow because of the United States boycott.
The National Sports Committee of Indonesia (Indonesian: Komite Olahraga Nasional Indonesia, KONI) sent the nation's smallest delegation to the Games since 1984. A total of 22 athletes, 13 men and 9 women, competed in 8 sports. Three athletes received their spots in athletics and swimming by wild card entries. Other Indonesian athletes won their spots by participating in various qualifying matches around the world. Badminton player and former Olympic gold medalist Taufik Hidayat, who competed at his fourth Olympic games, was the oldest and most experienced athlete of the team. Backstroke swimmer I Gede Siman Sudartawa, the youngest male athlete of the team, was Indonesia's flag bearer at the opening ceremony.
Indonesia, however, failed to win an Olympic gold medal for the first time since 1992, leaving London with only a silver and a bronze medal. Weightlifters Eko Yuli Irawan and Triyatno managed to repeat their Olympic medals from Beijing.
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.
Note–Ranks given for track events are within the athlete's heat only
Q = Qualified for the next round
q = Qualified for the next round as a fastest loser or, in field events, by position without achieving the qualifying target
NR = National record
N/A = Round not applicable for the event
Bye = Athlete not required to compete in round
Indonesia has qualified 1 fencer.Women
Indonesia has qualified 1 judoka
Indonesia have qualified the following shooters.Women
Indonesian swimmers have so far achieved qualifying standards in the following events (up to a maximum of 2 swimmers in each event at the Olympic Qualifying Time (OQT), and 1 at the Olympic Selection Time (OST)):Men
Indonesia has qualified 5 men and 1 woman.Men