| Rembercourt-Sommaisne | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason de la ville de Rembercourt-Sommaisne (Meuse).svg |
| Arrondissement: | Bar-le-Duc |
| Canton: | Revigny-sur-Ornain |
| Insee: | 55423 |
| Postal Code: | 55250 |
| Mayor: | Sylvain Obara[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC de l'Aire à l'Argonne |
| Coordinates: | 48.9111°N 5.1789°W |
| Elevation Min M: | 223 |
| Elevation Max M: | 307 |
| Area Km2: | 22.32 |
Rembercourt-Sommaisne (in French pronounced as /ʁɑ̃bɛʁkuʁ sɔmɛn/) is a commune in the Meuse department in Grand Est in northeastern France.
Rembercourt-Sommaisne was created on 1 January 1973 when the former communes of Rembercourt-aux-Pots and Sommaisne were joined. The 15th century church of Saint-Louvent in Rembercourt-aux-Pots is a listed monument.
The Chée forms part of the commune's southern border.
The Aisne rises near Sommaisne, a hamlet in the northern part of the commune.