| Sant'Ermo | |
| Coordinates: | 43.5367°N 10.5786°W |
| Province: | Pisa (PI) |
| Comune: | Casciana Terme Lari |
| Elevation M: | 180 |
| Population Total: | 114 |
| Population As Of: | 2001 |
| Postal Code: | 56035 |
| Area Code: | (+39) 0587 |
Sant'Ermo is a village in Tuscany, central Italy, administratively a frazione of the comune of Casciana Terme Lari, province of Pisa. At the time of the 2001 census its population was 114.[1]
Sant'Ermo is about 40 km from Pisa and 7 km from Lari.