| Marcilly-sur-Eure | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Marcilly-sur-Eure (Eure).svg |
| Arrondissement: | Évreux |
| Canton: | Saint-André-de-l'Eure |
| Insee: | 27391 |
| Postal Code: | 27810 |
| Mayor: | Claude Royoux[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Évreux Portes de Normandie |
| Coordinates: | 48.8272°N 1.3475°W |
| Elevation M: | 72 |
| Elevation Min M: | 65 |
| Elevation Max M: | 141 |
| Area Km2: | 15.48 |
Marcilly-sur-Eure (in French pronounced as /maʁsiji syʁ œʁ/, literally Marcilly on Eure) is a commune in the Eure department in Normandy in north-western France.