Pesa
| Pesa | |
|---|---|
 Ramagliano Bridge at Sambuca Val di Pesa | |
| Origin | Monte San Michele |
| Mouth | Arno River |
| Basin countries | Italy |
| Length | 53 km (33 mi) |
| Source elevation | 892 m |
| Basin area | 339 km2 (131 sq mi) |
The Pesa is a river in Tuscany, central Italy. It has a length of 53 km, and, after crossing the provinces of Siena and Florence, flows into the Arno River near Montelupo Fiorentino.