| Margny | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Margny 08.svg |
| Arrondissement: | Sedan |
| Canton: | Carignan |
| Insee: | 08275 |
| Postal Code: | 08370 |
| Mayor: | Michel Protin[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 49.6156°N 5.3522°W |
| Elevation M: | 250 |
| Area Km2: | 6.68 |
Margny (in French pronounced as /maʁɲi/) is a commune in the Ardennes department in northern France.