| Saint-Didier-sur-Arroux | |
| Commune Status: | Commune |
| Insee: | 71407 |
| Postal Code: | 71190 |
| Arrondissement: | Autun |
| Canton: | Autun-2 |
| Coordinates: | 46.8342°N 4.1158°W |
| Elevation M: | 350 |
| Elevation Min M: | 263 |
| Elevation Max M: | 470 |
| Area Km2: | 27.94 |
Saint-Didier-sur-Arroux (pronounced as /fr/, literally Saint-Didier on Arroux) is a commune in the Saône-et-Loire department in the region of Bourgogne-Franche-Comté in eastern France.