| Médréac | |
| Native Name: | (Gallo) |
| Commune Status: | Commune |
| Coordinates: | 48.2681°N -2.0658°W |
| Insee: | 35171 |
| Postal Code: | 35360 |
| Arrondissement: | Rennes |
| Canton: | Montauban-de-Bretagne |
| Mayor: | Serge Collet[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Saint-Méen Montauban |
| Elevation Min M: | 45 |
| Elevation Max M: | 137 |
| Area Km2: | 35.02 |
Médréac (in French pronounced as /medʁeak/; Breton: Mederieg; Gallo: Méderiac) is a commune in the Ille-et-Vilaine department of Brittany in northwestern France.
Inhabitants of Médréac are called Médréaciens in French.