| Fossé | |
| Commune Status: | Commune |
| Arrondissement: | Vouziers |
| Canton: | Vouziers |
| Insee: | 08176 |
| Postal Code: | 08240 |
| Mayor: | Christian Hulot[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Argonne Ardennaise |
| Coordinates: | 49.4467°N 5.0058°W |
| Elevation M: | 286 |
| Elevation Min M: | 206 |
| Elevation Max M: | 329 |
| Area Km2: | 8.94 |
Fossé (in French pronounced as /fose/) is a commune in Ardennes, France. The French Egyptologist Adolphe Reinach was killed in Fossé in the first month of the First World War.