| Mouy-sur-Seine | |
| Commune Status: | Commune |
| Coordinates: | 48.4197°N 3.2419°W |
| Insee: | 77325 |
| Postal Code: | 77480 |
| Arrondissement: | Provins |
| Canton: | Provins |
| Mayor: | Gérard Carrasco[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC Bassée - Montois |
| Elevation Min M: | 52 |
| Elevation Max M: | 58 |
| Area Km2: | 8.62 |
Mouy-sur-Seine (in French pronounced as /mwi syʁ sɛn/, literally Mouy on Seine) is a commune in the Seine-et-Marne department in the Île-de-France region in north-central France.
Inhabitants are called Mouytois.