Gavorrano is a mountain-side comune (municipality) in the Province of Grosseto in the western Italian region of Tuscany, located about 100 km (62 mi) southwest of Florence and about 25 km (16 mi) northwest of Grosseto. Gavorrano borders the municipalities of Castiglione della Pescaia, Grosseto, Massa Marittima, Roccastrada and Scarlino.