| Saint-Martin-sur-Armançon | |
| Commune Status: | Commune |
| Coordinates: | 47.8733°N 4.0703°W |
| Insee: | 89355 |
| Postal Code: | 89700 |
| Arrondissement: | Avallon |
| Canton: | Tonnerrois |
| Mayor: | Benjamin Lemaire[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 139 |
| Elevation Max M: | 277 |
| Area Km2: | 14.11 |
Saint-Martin-sur-Armançon (in French pronounced as /sɛ̃ maʁtɛ̃ syʁ aʁmɑ̃sɔ̃/, literally Saint-Martin on Armançon) is a commune in the Yonne department in Bourgogne-Franche-Comté in north-central France.