| Cuinzier | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Cuinzier (Loire).svg |
| Arrondissement: | Roanne |
| Canton: | Charlieu |
| Insee: | 42079 |
| Postal Code: | 42460 |
| Mayor: | Marc Lapallus[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Charlieu-Belmont Communauté |
| Coordinates: | 46.1283°N 4.2675°W |
| Elevation M: | 496 |
| Elevation Min M: | 389 |
| Elevation Max M: | 610 |
| Area Km2: | 5.62 |
Cuinzier (in French pronounced as /kɥɛ̃zje/) is a commune in the Loire department in central France.