| Longchamp | |
| Commune Status: | Commune |
| Arrondissement: | Chaumont |
| Canton: | Poissons |
| Insee: | 52291 |
| Postal Code: | 52240 |
| Mayor: | Anne-Claire Bourcelot[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 48.1289°N 5.4408°W |
| Elevation M: | 453 |
| Area Km2: | 6.11 |
Longchamp (in French pronounced as /lɔ̃ʃɑ̃/) is a commune in the Haute-Marne department in north-eastern France.