| Trézény | |
| Native Name: | Trezeni |
| Commune Status: | Commune |
| Coordinates: | 48.7583°N -3.3647°W |
| Insee: | 22381 |
| Postal Code: | 22450 |
| Arrondissement: | Lannion |
| Canton: | Tréguier |
| Mayor: | Yves Peurou[1] |
| Term: | 2021 - 2026 |
| Intercommunality: | Lannion-Trégor Communauté |
| Elevation Min M: | 29 |
| Elevation Max M: | 105 |
| Area Km2: | 3.25 |
Trézény (in French pronounced as /tʁezeni/; Breton: Trezeni) is a commune in the Côtes-d'Armor department of Brittany in northwestern France.