| Gabriel de Castilla Base | |
| Official Name: | Base Antártica Española del Ejército de Tierra, Gabriel de Castilla |
| Native Name Lang: | es |
| Settlement Type: | Antarctic base |
| Pushpin Map: | Antarctica |
| Pushpin Map Alt: | Location of Gabriel de Castilla Base in Antarctica |
| Pushpin Map Caption: | Location of Gabriel de Castilla Base in Antarctica |
| Pushpin Mapsize: | 250 |
| Pushpin Relief: | yes |
| Coordinates: | -62.977°N -60.6753°W |
| Subdivision Type: | Country |
| Subdivision Name: |  |
| Subdivision Type1: | Location in Antarctica |
| Subdivision Name1: | Deception Island South Shetland Islands |
| Elevation M: | 15 |
| Population As Of: | 2017 |
| Population Footnotes: | [1] |
| Population Blank1 Title: | Summer |
| Population Blank1: | 33 |
| Population Blank2 Title: | Winter |
| Population Blank2: | 0 |
| Established Title: | Established |
| Extinct Title: | Evacuated |
| Named For: | Gabriel de Castilla |
| Blank Name Sec1: | Type |
| Blank Info Sec1: | Seasonal |
| Blank1 Name Sec1: | Period |
| Blank1 Info Sec1: | Summer |
| Blank2 Name Sec1: | Status |
| Blank2 Info Sec1: | Operational |
| Blank Name Sec2: | Activities |
| Code1 Name: | UN/LOCODE |
| Code1 Info: | AQ GDC |
Gabriel de Castilla Base[2] is a Spanish research station located on Deception Island, South Shetland Islands, Antarctica. The station was constructed in late 1989.[3] [4] The station is named for Gabriel de Castilla, a 17th-century Spanish navigator and, according to some reports, the first person to sight mainland Antarctica.[5]