| Marby | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Marby.svg |
| Arrondissement: | Charleville-Mézières |
| Canton: | Signy-l'Abbaye |
| Insee: | 08273 |
| Postal Code: | 08260 |
| Mayor: | Marie-Claire Doré[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 49.8297°N 4.4303°W |
| Elevation M: | 306 |
| Area Km2: | 7.35 |
Marby (in French pronounced as /maʁbi/) is a commune in the Ardennes department in northern France.
The Sormonne flows through the commune.