Laos competed at the 2012 Summer Olympics in London when the event took place from 27 July to 12 August 2012. It was the nation's eighth overall appearance following their Olympic debut in 1980. Laos had previously competed in seven consecutive Olympics prior to London apart from the 1984 Summer Olympics boycott. Two athletes and one swimmer were selected to the Laotian Olympic team after the country did not qualify any competitors. Sprinter Kilakone Siphonexay was the nation's flag bearer at the opening and closing ceremonies. At the Olympics, Siphonexay and runner Laenly Phoutthavong failed to advance in the 100 m heats while swimmer Phathana Inthavong did not reach farther than the 50 m freestyle heats. Overall, Inthavong had the highest ranking for Laos in 2012 with a 56th place finish.