| Chassy | |
| Commune Status: | Commune |
| Coordinates: | 47.8525°N 3.3492°W |
| Insee: | 89088 |
| Postal Code: | 89110 |
| Arrondissement: | Auxerre |
| Canton: | Charny Orée de Puisaye |
| Mayor: | Sylviane Michet[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 116 |
| Elevation Max M: | 242 |
| Area Km2: | 16.45 |
Chassy (in French pronounced as /ʃasi/) is a commune in the Yonne department in Bourgogne-Franche-Comté in north-central France.