San Nazzaro is a comune (municipality) in the Province of Benevento, in the Italian region of Campania. It is located about 60 km (37 mi) northeast of Naples and about 12 km (7.5 mi) southeast of Benevento, the provincial capital.
As a comune, San Nazzaro is the basic administrative unit of local government in Italy, encompassing the settlement and its surrounding territory within the Province of Benevento. Its position in the Campania region places it in southern Italy, inland from the Tyrrhenian coast and within the Apennine hinterland around Benevento.