| San Sebastián | |
| Settlement Type: | Village |
| Pushpin Map: | Tierra del Fuego |
| Pushpin Mapsize: | 260 |
| Pushpin Label Position: | right |
| Subdivision Type: | Country |
| Subdivision Name: |  Argentina |
| Subdivision Type1: | Province |
| Subdivision Type2: | Department |
| Subdivision Name2: | Río Grande |
| Established Title: | Established |
| Established Date: | 29 July 1983 |
| Population As Of: | 2010 Census |
| Population Total: | 940 |
| Population Density Km2: | auto |
| Timezone: | ART |
| Coordinates: | -53.2997°N -68.4575°W |
| Elevation M: | 14 |
| Postal Code Type: | CPA Base |
| Postal Code: | V 9420 |
| Area Code: | +54 2964 |
| Blank Name Sec1: | Climate |
| Blank Info Sec1: | Dfc |
San Sebastián is a village in Argentina, located on the southwestern shore of San Sebastián Bay, on National Route 3 in the Río Grande Department of Tierra del Fuego Province.[1] [2] As of 2012, it has a population of 940.