| Trémeheuc | |
| Native Name: | (Gallo) |
| Commune Status: | Commune |
| Coordinates: | 48.4264°N -1.7019°W |
| Insee: | 35342 |
| Postal Code: | 35270 |
| Arrondissement: | Saint-Malo |
| Canton: | Combourg |
| Mayor: | Pierre Sorais[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Bretagne Romantique |
| Elevation Min M: | 69 |
| Elevation Max M: | 127 |
| Area Km2: | 6.05 |
Trémeheuc (in French pronounced as /tʁemə.øk/; Gallo: Tréméhoec, Breton: Tremaeg) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France.
Inhabitants of Trémeheuc are called Trémeheucois in French.