| Aillant-sur-Tholon | |
| Image Coat Of Arms: | Blason de la ville d'Aillant-sur-Tholon (89).svg |
| Coordinates: | 47.8756°N 3.3517°W |
| Insee: | 89003 |
| Postal Code: | 89110 |
| Arrondissement: | Auxerre |
| Canton: | Charny Orée de Puisaye |
| Commune: | Montholon |
| Elevation Min M: | 108 |
| Elevation Max M: | 241 |
| Area Km2: | 18.20 |
| Population: | 1650 |
| Population Date: | 2021 |
| Population Footnotes: | [1] |
Aillant-sur-Tholon (in French pronounced as /ajɑ̃ syʁ tɔlɔ̃/) is a former commune in the Yonne department in Bourgogne-Franche-Comté in north-central France. On 1 January 2017, it was merged into the new commune Montholon.[2] Aillant-sur-Tholon is twinned with Studley in Warwickshire.