| Quinciano | |
| Coordinates: | 43.2056°N 11.4283°W |
| Province: | Siena (SI) |
| Comune: | Monteroni d'Arbia |
| Elevation M: | 207 |
| Population Total: | 29 |
| Population As Of: | 2011 |
Quinciano is a village in Tuscany, central Italy, administratively a frazione of the comune of Monteroni d'Arbia, province of Siena. At the time of the 2001 census its population was 17.[1]
Quinciano is about 20 km from Siena and 5 km from Monteroni d'Arbia.