| Trimer | |
| Commune Status: | Commune |
| Coordinates: | 48.3414°N -1.8925°W |
| Insee: | 35346 |
| Postal Code: | 35190 |
| Arrondissement: | Saint-Malo |
| Canton: | Combourg |
| Mayor: | Christophe Baot[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC Bretagne Romantique |
| Elevation Min M: | 29 |
| Elevation Max M: | 87 |
| Area Km2: | 3.56 |
Trimer is a commune in the Ille-et-Vilaine department of Brittany in northwestern France.