| Isola d'Arbia | |
| Coordinates: | 43.2586°N 11.38°W |
| Province: | Siena (SI) |
| Comune: | Siena |
| Elevation M: | 176 |
| Population Total: | 1060 |
| Population As Of: | 2011 |
Isola d'Arbia is a village in Tuscany, central Italy, administratively a frazione of the comune of Siena, province of Siena. At the time of the 2001 census its population was 909.[1]
Isola d'Arbia is about 10 km from Siena.