| Flagey | |
| Commune Status: | Commune |
| Arrondissement: | Langres |
| Canton: | Villegusien-le-Lac |
| Insee: | 52200 |
| Postal Code: | 52250 |
| Mayor: | Sonia Guerard[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Auberive Vingeanne et Montsaugeonnais |
| Coordinates: | 47.7831°N 5.2561°W |
| Elevation M: | 450 |
| Elevation Min M: | 360 |
| Elevation Max M: | 462 |
| Area Km2: | 8.32 |
Flagey (in French pronounced as /flaʒɛ/) is a commune in the Haute-Marne department in north-eastern France.