| Saint-Denis-le-Ferment | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Saint-Denis-le-Ferment (Eure).svg |
| Arrondissement: | Les Andelys |
| Canton: | Gisors |
| Insee: | 27533 |
| Postal Code: | 27140 |
| Mayor: | Nathalie Thébault[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 49.3297°N 1.7194°W |
| Elevation M: | 105 |
| Elevation Min M: | 54 |
| Elevation Max M: | 137 |
| Area Km2: | 18.01 |
Saint-Denis-le-Ferment (in French pronounced as /sɛ̃ dəni lə fɛʁmɑ̃/) is a commune in the Eure department in Normandy in northern France.