| Roncey | |
| Commune Status: | Commune |
| Arrondissement: | Coutances |
| Canton: | Quettreville-sur-Sienne |
| Insee: | 50437 |
| Postal Code: | 50210 |
| Mayor: | Alain Lechevallier[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Coutances Mer et Bocage |
| Coordinates: | 48.9903°N -1.3322°W |
| Elevation M: | 90 |
| Elevation Min M: | 33 |
| Elevation Max M: | 131 |
| Area Km2: | 12.15 |
| Demonym: | Roncyais |
Roncey (in French pronounced as /ʁɔ̃sɛ/) is a commune in the Manche department in Normandy in north-western France.