| Courlon-sur-Yonne | |
| Commune Status: | Commune |
| Coordinates: | 48.3394°N 3.1661°W |
| Insee: | 89124 |
| Postal Code: | 89140 |
| Arrondissement: | Sens |
| Canton: | Thorigny-sur-Oreuse |
| Mayor: | Christina Rangdet[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 54 |
| Elevation Max M: | 138 |
| Area Km2: | 16.73 |
Courlon-sur-Yonne (in French pronounced as /kuʁlɔ̃ syʁ jɔn/, literally Courlon on Yonne) is a commune in the Yonne department in Bourgogne-Franche-Comté in north-central France.