| Quédillac | |
| Native Name: | (Gallo) |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Quédillac (Ille-et-Vilaine).svg |
| Coordinates: | 48.2503°N -2.1414°W |
| Insee: | 35234 |
| Postal Code: | 35290 |
| Arrondissement: | Rennes |
| Canton: | Montauban-de-Bretagne |
| Mayor: | Hubert Lorand[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Saint-Méen Montauban |
| Elevation Min M: | 0 |
| Elevation Max M: | 121 |
| Area Km2: | 26.54 |
Quédillac (in French pronounced as /kedijak/; Gallo: Qedilhac, Breton: Kedilieg) is a commune in the Ille-et-Vilaine department in Brittany northwestern France.
Inhabitants of Quédillac are called Quédillacais.