| Chassemy | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Chassemy 02.svg |
| Arrondissement: | Soissons |
| Canton: | Fère-en-Tardenois |
| Insee: | 02167 |
| Postal Code: | 02370 |
| Mayor: | Thierry Jeux[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Val de l'Aisne |
| Coordinates: | 49.38°N 3.5078°W |
| Elevation M: | 69 |
| Elevation Min M: | 43 |
| Elevation Max M: | 160 |
| Area Km2: | 10.85 |
Chassemy (pronounced as /fr/) is a commune in the Aisne department in Hauts-de-France in northern France.