| Iesa | |
| Coordinates: | 43.0994°N 11.25°W |
| Province: | Siena (SI) |
| Comune: | Monticiano |
| Elevation M: | 432 |
| Population Total: | 146 |
| Population As Of: | 2011 |
| Gentilic: | Iesattoli |
Iesa is a village in Tuscany, central Italy, administratively a frazione of the comune of Monticiano, province of Siena. At the time of the 2001 census its population was 146.[1]
The village is formed by the hamlets of Cerbaia, Contra, Lama, Palazzo, Quarciglioni and Solaia.