| Dettey | |
| Commune Status: | Commune |
| Insee: | 71172 |
| Postal Code: | 71190 |
| Arrondissement: | Autun |
| Canton: | Autun-2 |
| Coordinates: | 46.7642°N 4.1836°W |
| Elevation M: | 526 |
| Elevation Min M: | 274 |
| Elevation Max M: | 530 |
| Area Km2: | 22.5 |
Dettey is a commune in the Saône-et-Loire department in the region of Bourgogne-Franche-Comté in eastern France.