| Castéras | |
| Commune Status: | Commune |
| Arrondissement: | Saint-Girons |
| Canton: | Arize-Lèze |
| Insee: | 09083 |
| Postal Code: | 09130 |
| Mayor: | Rosine Moreaud[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 43.1297°N 1.4008°W |
| Elevation M: | 300 |
| Elevation Min M: | 308 |
| Elevation Max M: | 404 |
| Area Km2: | 1.84 |
Castéras is a commune in the Ariège department in southwestern France.