| Sourdeval-les-Bois | |
| Arrondissement: | Coutances |
| Canton: | Quettreville-sur-Sienne |
| Insee: | 50583 |
| Postal Code: | 50450 |
| Commune: | Gavray-sur-Sienne |
| Coordinates: | 48.9108°N -1.2636°W |
| Elevation M: | 91 |
| Elevation Min M: | 55 |
| Elevation Max M: | 184 |
| Area Km2: | 5.86 |
| Population: | 227 |
| Population Date: | 2019 |
| Population Footnotes: | [1] |
Sourdeval-les-Bois (pronounced as /fr/) is a former commune in the Manche department in Normandy in north-western France. On 1 January 2019, it was merged into the new commune Gavray-sur-Sienne.[2]