| Cortambert | |
| Commune Status: | Commune |
| Insee: | 71146 |
| Postal Code: | 71250 |
| Arrondissement: | Mâcon |
| Canton: | Cluny |
| Intercommunality: | Clunisois |
| Coordinates: | 46.4792°N 4.715°W |
| Elevation M: | 336 |
| Elevation Min M: | 220 |
| Elevation Max M: | 505 |
| Area Km2: | 16.02 |
Cortambert is a commune in the Saône-et-Loire department in the region of Bourgogne-Franche-Comté in eastern France.
The Grosne forms most of the commune's western border.