| La Marne | |
| Native Name: | (Gallo) |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville 44 La-Marne.svg |
| Arrondissement: | Nantes |
| Canton: | Machecoul-Saint-Même |
| Insee: | 44090 |
| Postal Code: | 44270 |
| Mayor: | Jean-Marie Bruneteau[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Sud Retz Atlantique |
| Coordinates: | 46.9964°N -1.7397°W |
| Elevation M: | 12 |
| Area Km2: | 17.8 |
La Marne (in French pronounced as /la maʁn/; Gallo: La Marnn, Breton: Maeron) is a commune in the Loire-Atlantique department in western France.