San Martín Base
San Martín Base 
    Base San Martín  | |
|---|---|
Antarctic base  | |
San Martín in 2008 austral winter  | |
| Motto(s):  Spanish: Hombres de voluntad, luchan y vencen desde 1951 ("Willing men, fight and win since 1951")  | |
| Coordinates: 68°07′48″S 67°06′05″W / 68.130043°S 67.101311°W | |
| Country | Argentina | 
| Province | Tierra del Fuego, Antarctica, and South Atlantic Islands Province | 
| Department | Antártida Argentina | 
| Region | Marguerite Bay Antarctic Peninsula Antarctica  | 
| Location | Barry Island | 
| Established | 21 March 1951 | 
| Named after | José de San Martín | 
| Government | |
| • Type | Directorate | 
| • Body | Dirección Nacional del Antártico | 
| • Operator | Instituto Antártico Argentino | 
| Area | |
 • Total  | 18 ha (44 acres) | 
| Elevation | 5 m (16 ft) | 
| Population  (2017)  | |
| • Summer | 19 | 
| • Winter | 21 | 
| Time zone | UTC-3 (ART) | 
| UN/LOCODE | AQ SMT | 
| Type | All year-round | 
| Period | Annual | 
| Status | Operational | 
| Activities | List 
  | 
| Facilities | List 
  | 
San Martín Base (Spanish: Base San Martín) is a permanent, all year-round Argentine Antarctic base and scientific research station named after General José de San Martín, the Libertador of Argentina, Chile and Peru. It is located on Barry Island, Marguerite Bay, Antarctic Peninsula.
At the time of its foundation in 1951, it was the first human settlement south of the Antarctic Circle. As of 2014 it is Argentina's westernmost permanent base.
As of 2014 San Martín is one of 13 research bases in Antarctica operated by Argentina.