| Mussey-sur-Marne | |
| Commune Status: | Commune |
| Arrondissement: | Saint-Dizier |
| Canton: | Joinville |
| Insee: | 52346 |
| Postal Code: | 52300 |
| Mayor: | Pascal Renard[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Bassin de Joinville en Champagne |
| Coordinates: | 48.38°N 5.15°W |
| Elevation M: | 280 |
| Elevation Min M: | 192 |
| Elevation Max M: | 368 |
| Area Km2: | 9.92 |
Mussey-sur-Marne (in French pronounced as /mysɛ syʁ maʁn/, literally Mussey on Marne) is a commune in the Haute-Marne department in north-eastern France.