| Guerchy | |
| Coordinates: | 47.8939°N 3.4408°W |
| Insee: | 89196 |
| Postal Code: | 89113 |
| Arrondissement: | Auxerre |
| Canton: | Charny Orée de Puisaye |
| Commune: | Valravillon |
| Elevation Min M: | 99 |
| Elevation Max M: | 182 |
| Area Km2: | 11.86 |
| Population: | 753 |
| Population Date: | 2019 |
| Population Footnotes: | [1] |
Guerchy (in French pronounced as /ɡɛʁʃi/) is a former commune in the Yonne department in Bourgogne-Franche-Comté in north-central France. On 1 January 2016, it was merged into the new commune of Valravillon.[2]