| Cusy | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Cusy.svg |
| Arrondissement: | Annecy |
| Canton: | Rumilly |
| Insee: | 74097 |
| Postal Code: | 74540 |
| Mayor: | Patricia Mermoz[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Grand Annecy |
| Coordinates: | 45.7658°N 6.0314°W |
| Elevation Min M: | 420 |
| Elevation Max M: | 1365 |
| Area Km2: | 17.43 |
| Demonym: | Cusiard / Cusiarde |
Cusy (in French pronounced as /kysi/; Côsi) is a commune in the Haute-Savoie department in the Auvergne-Rhône-Alpes region in south-eastern France.
The Chéran forms the commune's north-eastern border.