| Reuil | |
| Commune: | Cœur-de-la-Vallée |
| Image Coat Of Arms: | Blason Reuil.svg |
| Arrondissement: | Épernay |
| Canton: | Dormans-Paysages de Champagne |
| Insee: | 51457 |
| Postal Code: | 51480 |
| Coordinates: | 49.0831°N 3.8006°W |
| Elevation M: | 67 |
| Area Km2: | 5.36 |
| Population: | 281 |
| Population Date: | 2020 |
| Population Footnotes: | [1] |
Reuil (in French pronounced as /ʁœj/) is a former commune in the Marne department in north-eastern France. On 1 January 2023, it was merged into the new commune of Cœur-de-la-Vallée.[2]