| Écollemont | |
| Commune Status: | Commune |
| Arrondissement: | Vitry-le-François |
| Canton: | Sermaize-les-Bains |
| Insee: | 51223 |
| Postal Code: | 51290 |
| Mayor: | Albert Chrustowski[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Perthois-Bocage et Der |
| Coordinates: | 48.6217°N 4.7333°W |
| Area Km2: | 2.81 |
Écollemont (pronounced as /fr/) is a commune in the Marne department in north-eastern France.
The Blaise forms the commune's northern border.
The Lake Der-Chantecoq forms part of the commune's southern border.