| Blay | |
| Commune Status: | Commune |
| Arrondissement: | Bayeux |
| Canton: | Trévières |
| Insee: | 14078 |
| Postal Code: | 14400 |
| Mayor: | Philippe Launay[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC Isigny-Omaha Intercom |
| Coordinates: | 49.2706°N -0.8394°W |
| Elevation M: | 20 |
| Elevation Min M: | 15 |
| Elevation Max M: | 81 |
| Area Km2: | 7.14 |
Blay (in French pronounced as /blɛ/) is a commune in the Calvados department in the Normandy region in northwestern France.