| Sommancourt | |
| Commune Status: | Commune |
| Arrondissement: | Saint-Dizier |
| Canton: | Eurville-Bienville |
| Insee: | 52475 |
| Postal Code: | 52130 |
| Mayor: | Pascal Guillemin[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Saint-Dizier Der et Blaise |
| Coordinates: | 48.5044°N 5.0347°W |
| Elevation M: | 245 |
| Elevation Min M: | 198 |
| Elevation Max M: | 267 |
| Area Km2: | 5.73 |
Sommancourt (in French pronounced as /sɔmɑ̃kuʁ/) is a commune in the Haute-Marne department in north-eastern France.