| Bion | |
| Arrondissement: | Avranches |
| Canton: | Le Mortainais |
| Insee: | 50056 |
| Postal Code: | 50140 |
| Commune: | Mortain-Bocage |
| Coordinates: | 48.6206°N -0.9181°W |
| Elevation M: | 133 |
| Elevation Min M: | 76 |
| Elevation Max M: | 305 |
| Area Km2: | 12.67 |
| Population: | 368 |
| Population Date: | 2019 |
| Population Footnotes: | [1] |
Bion (in French pronounced as /bjɔ̃/) is a former commune in the Manche department in the Normandy region in northwestern France. On 1 January 2016, it was merged into the new commune of Mortain-Bocage.[2]