| Le Roncenay-Authenay | |
| Arrondissement: | Bernay |
| Canton: | Verneuil-sur-Avre |
| Insee: | 27024 |
| Postal Code: | 27240 |
| Commune: | Mesnils-sur-Iton |
| Coordinates: | 48.8597°N 1.0467°W |
| Elevation M: | 158 |
| Elevation Min M: | 132 |
| Elevation Max M: | 171 |
| Area Km2: | 8.79 |
| Population: | 379 |
| Population Date: | 2013 |
| Population Footnotes: | [1] |
Le Roncenay-Authenay (pronounced as /fr/) is a former commune in the Eure department in northern France. On 1 January 2016, it was merged into the new commune of Mesnils-sur-Iton.[2]