| Chiusdino | |
| Official Name: | Comune di Chiusdino |
| Coordinates: | 43.15°N 16°W |
| Region: | Tuscany |
| Province: | Siena (SI) |
| Frazioni: | Ciciano, Frassini, Frosini, Montalcinello, Palazzetto |
| Mayor: | Luciana Bartaletti |
| Area Total Km2: | 142.62 |
| Population Footnotes: | [1] |
| Population Total: | 1888 |
| Population As Of: | 30 June 2017 |
| Population Demonym: | Chiusdinesi |
| Elevation M: | 564 |
| Postal Code: | 53012 |
| Area Code: | 0577 |
Chiusdino is a comune (municipality) in the Province of Siena in the Italian region Tuscany, located about 70km (40miles) south of Florence and about 30km (20miles) southwest of Siena.
Chiusdino borders the following municipalities: Casole d'Elsa, Monticiano, Montieri, Radicondoli, Roccastrada, Sovicille.