| Cahaignes | |
| Image Coat Of Arms: | Blason Cahaignes.svg |
| Arrondissement: | Les Andelys |
| Canton: | Les Andelys |
| Insee: | 27122 |
| Postal Code: | 27420 |
| Commune: | Vexin-sur-Epte |
| Coordinates: | 49.2092°N 1.6008°W |
| Elevation M: | 111 |
| Elevation Min M: | 87 |
| Elevation Max M: | 141 |
| Area Km2: | 9.54 |
| Population: | 344 |
| Population Date: | 2019 |
| Population Footnotes: | [1] |
Cahaignes (in French pronounced as /ka.ɛɲ/) is a former commune in the Eure department in Normandy in northern France. On 1 January 2016, it was merged into the new commune of Vexin-sur-Epte.[2]