| Grainville-Ymauville | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Grainville-Ymauville.svg |
| Arrondissement: | Le Havre |
| Canton: | Saint-Romain-de-Colbosc |
| Insee: | 76317 |
| Postal Code: | 76110 |
| Mayor: | Serge Girard[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC Campagne de Caux |
| Coordinates: | 49.6583°N 0.4167°W |
| Elevation M: | 105 |
| Elevation Min M: | 93 |
| Elevation Max M: | 135 |
| Area Km2: | 6.29 |
Grainville-Ymauville (pronounced as /fr/) is a commune in the Seine-Maritime department in the Normandy region in northern France.
A farming village situated in the Pays de Caux, some 19miles northeast of Le Havre, at the junction of the D75 and D10 roads. The SNCF railways have a station here.