| Montgenost | |
| Commune Status: | Commune |
| Arrondissement: | Épernay |
| Canton: | Sézanne-Brie et Champagne |
| Insee: | 51376 |
| Postal Code: | 51260 |
| Mayor: | Bruno Sans[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Sézanne-Sud Ouest Marnais |
| Coordinates: | 48.5978°N 3.5956°W |
| Elevation M: | 195 |
| Area Km2: | 8.4 |
Montgenost (in French pronounced as /mɔ̃ʒəno/) is a commune in the Marne department in north-eastern France.