| Refuge Astronomer Cruls | |
| Native Name: | Refúgio Astrônomo Cruls |
| Settlement Type: | Antarctic station |
| Flag Size: | 110px |
| Mapsize: | 350px |
| Pushpin Map: | Antarctica |
| Pushpin Relief: | yes |
| Pushpin Mapsize: | 300 |
| Pushpin Map Alt: | Location of Refuge Astronomer Cruls in Antarctica |
| Pushpin Map Caption: | Location of Refuge Astronomer Cruls in Antarctica |
| Coordinates: | -62.2428°N -58.9808°W |
| Subdivision Type: | Country |
| Subdivision Name: |  |
| Subdivision Type1: | Location in Antarctica |
| Subdivision Type3: | Administered by |
| Subdivision Name3: | Brazilian Antarctic Program |
| Established Title: | Established |
| Blank Name Sec1: | Type |
| Blank Info Sec1: | Seasonal |
| Blank1 Name Sec1: | Period |
| Blank1 Info Sec1: | Summer |
| Blank2 Name Sec1: | Status |
| Blank2 Info Sec1: | Operational |
| Elevation M: | 15 |
| Population Density Km2: | auto |
| Timezone1: | BRT |
| Utc Offset1: | -3 |
| Website: | PROANTAR |
Refuge Astronomer Cruls (Portuguese: Refúgio Astrônomo Cruls) is a Brazilian Antarctic summer facility named after astronomer Luis Cruls who set up an expedition in 1882 to Punta Arenas in order to observe the passage of Venus across the disk of the Sun.[1] The structure, established on 25 January 1985, is situated on Nelson Island (South Shetland Islands), southwest of King George Island, South Shetland Islands, Antarctica.
The refuge, which can accommodate up to 6 scientists for up to 40 days,[2] depends both logistically and administratively on Comandante Ferraz station. Together with Refuge Emílio Goeldi, located on Elephant Island, constitute the basic infra-structure to support the Brazilian Antarctic Program in Antarctica.