| Official Name: | San Antonio del Estrecho |
| Pushpin Map: | Peru |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Loreto |
| Subdivision Type2: | Province |
| Subdivision Name2: | Putumayo |
| Subdivision Type3: | District |
| Subdivision Name3: | Putumayo |
| Leader Title: | Mayor |
| Leader Name: | Humberto Fuentes Tello |
| Established Title: | Established |
| Established Date: | 2 July 1943 |
| Population As Of: | 2014 |
| Settlement Type: | Town |
| Population Total: | 8000 |
| Population Density Km2: | auto |
| Timezone: | PET |
| Utc Offset: | -5 |
| Coordinates: | -2.4483°N -72.6683°W |
San Antonio del Estrecho is a town in northern Peru, capital of Putumayo Province in Loreto Region. According to the 2014 census, it had a population of 8,000 people.[1] It is served by the El Estrecho Airport.