| Bacilly | |
| Commune Status: | Commune |
| Arrondissement: | Avranches |
| Canton: | Avranches |
| Insee: | 50027 |
| Postal Code: | 50530 |
| Mayor: | Eric Quinton[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Mont-Saint-Michel-Normandie |
| Coordinates: | 48.7017°N -1.4397°W |
| Elevation M: | 14 |
| Elevation Min M: | 7 |
| Elevation Max M: | 75 |
| Area Km2: | 15.88 |
Bacilly is a commune in the Manche department in the Normandy region in northwestern France.