| Monthelon | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Monthelon.png |
| Arrondissement: | Épernay |
| Canton: | Épernay-2 |
| Insee: | 51378 |
| Postal Code: | 51530 |
| Mayor: | Cédric Pienne[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Épernay, Coteaux et Plaine de Champagne |
| Coordinates: | 48.9939°N 3.9358°W |
| Elevation M: | 166 |
| Area Km2: | 2.66 |
Monthelon (in French pronounced as /mɔ̃tlɔ̃/) is a commune in the Marne department in north-eastern France.