| Kerien | |
| Native Name: | Kerien-Boulvriag |
| Commune Status: | Commune |
| Coordinates: | 48.3908°N -3.2108°W |
| Insee: | 22088 |
| Postal Code: | 22480 |
| Arrondissement: | Guingamp |
| Canton: | Callac |
| Mayor: | Claude Salomon[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Guingamp-Paimpol Agglomération |
| Elevation Min M: | 223 |
| Elevation Max M: | 307 |
| Area Km2: | 21.88 |
Kerien (in French pronounced as /kɛʁjɛ̃/;) is a commune in the Côtes-d'Armor department of Brittany in northwestern France.