| Tronchoy | |
| Commune Status: | Commune |
| Coordinates: | 47.915°N 3.9419°W |
| Insee: | 89423 |
| Postal Code: | 89700 |
| Arrondissement: | Avallon |
| Canton: | Tonnerrois |
| Mayor: | Jacques Tribut[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 123 |
| Elevation Max M: | 228 |
| Area Km2: | 6.59 |
Tronchoy (in French pronounced as /tʁɔ̃ʃwa/) is a commune in the Yonne department in Bourgogne-Franche-Comté in north-central France.