| Fontenay-Saint-Père | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Fontenay-Saint-Père (Yvelines).svg |
| Arrondissement: | Mantes-la-Jolie |
| Canton: | Limay |
| Insee: | 78246 |
| Postal Code: | 78440 |
| Mayor: | Thierry Jorel[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CU Grand Paris Seine et Oise |
| Coordinates: | 49.0278°N 1.7528°W |
| Elevation M: | 93 |
| Elevation Min M: | 67 |
| Elevation Max M: | 196 |
| Area Km2: | 13.06 |
Fontenay-Saint-Père (in French pronounced as /fɔ̃tnɛ sɛ̃ pɛʁ/) is a commune in the Yvelines department in the Île-de-France in north-central France.