| Foulain | |
| Commune Status: | Commune |
| Arrondissement: | Chaumont |
| Canton: | Chaumont-3 |
| Insee: | 52205 |
| Postal Code: | 52800 |
| Mayor: | Robert Henry[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Chaumont |
| Coordinates: | 48.04°N 5.2139°W |
| Elevation M: | 285 |
| Area Km2: | 26.28 |
Foulain (in French pronounced as /fulɛ̃/) is a commune in the Haute-Marne department in north-eastern France.