| Clessy | |
| Commune Status: | Commune |
| Insee: | 71136 |
| Postal Code: | 71130 |
| Arrondissement: | Charolles |
| Canton: | Gueugnon |
| Mayor: | Philippe Desroches[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 46.5586°N 4.0875°W |
| Elevation M: | 310 |
| Elevation Min M: | 242 |
| Elevation Max M: | 340 |
| Area Km2: | 16.99 |
Clessy (in French pronounced as /klesi/) is a commune in the Saône-et-Loire department in the region of Bourgogne-Franche-Comté in eastern France.