| Blacy | |
| Commune Status: | Commune |
| Coordinates: | 47.5733°N 4.0444°W |
| Insee: | 89043 |
| Postal Code: | 89440 |
| Arrondissement: | Avallon |
| Canton: | Chablis |
| Mayor: | Nadine Legendre[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 197 |
| Elevation Max M: | 331 |
| Area Km2: | 9.06 |
Blacy (in French pronounced as /blasi/) is a commune in the Yonne department in Bourgogne-Franche-Comté in north-central France.