| Mont-Saint-Martin | |
| Commune Status: | Commune |
| Arrondissement: | Vouziers |
| Canton: | Attigny |
| Insee: | 08308 |
| Postal Code: | 08400 |
| Mayor: | Gilles Lejeune[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Argonne Ardennaise |
| Coordinates: | 49.3361°N 4.6483°W |
| Elevation M: | 1202 |
| Area Km2: | 13.95 |
Mont-Saint-Martin (in French pronounced as /mɔ̃ sɛ̃ maʁtɛ̃/) is a commune in the Ardennes department in northern France.