| Sormonne | |
| Commune Status: | Commune |
| Arrondissement: | Charleville-Mézières |
| Canton: | Rocroi |
| Insee: | 08429 |
| Postal Code: | 08150 |
| Mayor: | François Deneux[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 49.8114°N 4.5672°W |
| Elevation M: | 168 |
| Area Km2: | 4.75 |
Sormonne (in French pronounced as /sɔʁmɔn/) is a commune in the Ardennes department and Grand Est region of north-eastern France.
The river Sormonne, a left tributary of the Meuse, flows through the commune.