| Margny | |
| Commune Status: | Commune |
| Arrondissement: | Épernay |
| Canton: | Dormans-Paysages de Champagne |
| Insee: | 51350 |
| Postal Code: | 51210 |
| Mayor: | Claudia Cousin[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Brie Champenoise |
| Coordinates: | 48.9311°N 3.645°W |
| Elevation M: | 199 |
| Area Km2: | 10.53 |
Margny (in French pronounced as /maʁɲi/) is a commune in the Marne department in north-eastern France.