| Saint-Sylvain | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Saint-Sylvain.svg |
| Arrondissement: | Dieppe |
| Canton: | Saint-Valery-en-Caux |
| Insee: | 76651 |
| Postal Code: | 76460 |
| Mayor: | Sandrine Losay-Annebique[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC Côte d'Albâtre |
| Coordinates: | 49.8464°N 0.6736°W |
| Elevation M: | 70 |
| Elevation Min M: | 0 |
| Elevation Max M: | 83 |
| Area Km2: | 3.24 |
Saint-Sylvain (in French pronounced as /sɛ̃ silvɛ̃/) is a commune in the Seine-Maritime department in the Normandy region in northern France.
A small farming village situated in the Pays de Caux, some 24miles west of Dieppe at the junction of the D68 and the D105 roads. Huge chalk cliffs rise up from the pebbly beach and overlook the English Channel, forming the northern border of the commune's territory.