| Noc: | TLS |
| Nocname: | National Olympic Committee of East Timor |
| Games: | Summer Olympics |
| Year: | 2012 |
| Flagcaption: | Flag of East Timor |
| Location: | London, United Kingdom |
| Date: | 27 July – 12 August 2012 |
| Competitors: | 2 |
| Sports: | 1 |
| Flagbearer: | Augusto Ramos Soares (opening) Juventina Napoleão (closing) |
| Gold: | 0 |
| Silver: | 0 |
| Bronze: | 0 |
| Appearances: | auto |
| App Begin Year: | 2004 |
| See also: | (1984–1996) (2000) |
East Timor, also known as Timor-Leste and officially as the Democratic Republic of Timor-Leste, competed at the 2012 Summer Olympics in London, held from July 27 to August 12, 2012. This was the nation's fourth appearance at the Olympics, although it was first appeared as part of the Individual Olympic Athletes. Two marathon runners were selected to the team by wildcard places, without having qualified at any sporting event. East Timor, however, has yet to win its first Olympic medal.
Augusto Ramos Soares and Juventina Napoleão were the only Timorese athletes competing at the 2012 Summer Olympics. Soares was coached by Agueda Amaral, one of East Timor's most famous athletes, who represented Timor Leste at the 2000 Summer Olympics in Sydney, Australia. Unlike Amaral, who trained in a refugee camp, Soares trained in Portugal in mid-June earlier that year.[1]
See main article: Athletics at the 2012 Summer Olympics.
East Timor qualified two runners.[2]