| Saint-Adrien | |
| Commune Status: | Commune |
| Native Name: | Sant-Rien |
| Coordinates: | 48.4897°N -3.1292°W |
| Insee: | 22271 |
| Postal Code: | 22390 |
| Arrondissement: | Guingamp |
| Canton: | Callac |
| Mayor: | Yves Lachater[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Guingamp-Paimpol Agglomération |
| Elevation Min M: | 84 |
| Elevation Max M: | 211 |
| Area Km2: | 9.93 |
Saint-Adrien (in French pronounced as /sɛ̃.t‿adʁijɛ̃/;) is a commune in the Côtes-d'Armor department of Brittany in northwestern France.