| Meillac | |
| Native Name: | (Gallo) |
| Commune Status: | Commune |
| Coordinates: | 48.4131°N -1.8122°W |
| Insee: | 35172 |
| Postal Code: | 35270 |
| Arrondissement: | Saint-Malo |
| Canton: | Combourg |
| Mayor: | Georges Dumas[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Bretagne Romantique |
| Elevation Min M: | 22 |
| Elevation Max M: | 92 |
| Area Km2: | 32.21 |
Meillac (in French pronounced as /mɛjak/; ; Gallo: Melhac) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France.
Inhabitants of Meillac are called Meillacois in French.