| Clef Vallée d'Eure | |
| Commune Status: | Commune |
| Arrondissement: | Les Andelys |
| Canton: | Gaillon |
| Insee: | 27191 |
| Postal Code: | 27490 |
| Mayor: | Ollivier Lepinteur[1] |
| Term: | 2023 - 2026 |
| Intercommunality: | CA Seine-Eure |
| Coordinates: | 49.109°N 1.243°W |
| Area Km2: | 25.59 |
Clef Vallée d'Eure (in French pronounced as /kle vale dœʁ/) is a commune in the department of Eure, northern France. The municipality was established on 1 January 2016 by merger of the former communes of La Croix-Saint-Leufroy, Écardenville-sur-Eure and Fontaine-Heudebourg.[2]