| Mareuil-en-Brie | |
| Commune Status: | Commune |
| Arrondissement: | Épernay |
| Canton: | Dormans-Paysages de Champagne |
| Insee: | 51345 |
| Postal Code: | 51270 |
| Mayor: | José Miguel[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Paysages de la Champagne |
| Coordinates: | 48.9589°N 3.7444°W |
| Elevation M: | 213 |
| Area Km2: | 8.89 |
Mareuil-en-Brie (in French pronounced as /maʁœj ɑ̃ bʁi/, literally Mareuil in Brie) is a commune in the Marne department in north-eastern France.