| Marçay | |
| Commune Status: | Commune |
| Arrondissement: | Poitiers |
| Canton: | Vivonne |
| Insee: | 86145 |
| Postal Code: | 86370 |
| Mayor: | Sandra Girard[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 46.4636°N 0.2308°W |
| Elevation M: | 105 |
| Elevation Min M: | 98 |
| Elevation Max M: | 151 |
| Area Km2: | 30.32 |
Marçay (in French pronounced as /maʁsɛ/) is a commune in the Vienne department in the Nouvelle-Aquitaine region in western France.