| Guardistallo | |
| Official Name: | Comune di Guardistallo |
| Coordinates: | 43.3167°N 48°W |
| Region: | Tuscany |
| Province: | Pisa (PI) |
| Frazioni: | Casino di Terra |
| Mayor: | Mario Giuseppe Ettore Gruppelli |
| Area Total Km2: | 23.8 |
| Population Footnotes: | [1] |
| Population Total: | 1218 |
| Population As Of: | 2008 |
| Population Demonym: | Guardistallini |
| Elevation M: | 278 |
| Postal Code: | 56040 |
| Area Code: | 0586 |
Guardistallo is a comune (municipality) in the Province of Pisa in the Italian region Tuscany, located about 70km (40miles) southwest of Florence and about 50km (30miles) southeast of Pisa.
During the summer of 1944, it was the theatre of the Guardistallo massacre, carried out by German occupation forces. On 29 June 1944, 61 people were killed and buried in a mass grave. An extra person was wounded in the same occasion and died in the following days.