| Grandchamp | |
| Coordinates: | 47.8072°N 3.1553°W |
| Insee: | 89192 |
| Postal Code: | 89350 |
| Arrondissement: | Auxerre |
| Canton: | Charny Orée de Puisaye |
| Commune: | Charny-Orée-de-Puisaye |
| Elevation Min M: | 153 |
| Elevation Max M: | 224 |
| Area Km2: | 28.29 |
| Population: | 345 |
| Population Date: | 2019 |
| Population Footnotes: | [1] |
Grandchamp 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 Charny-Orée-de-Puisaye.[2]
The village lies in the middle of the commune, on the left bank of the river Ouanne, which flows northwestward through the commune.