Policastro may refer to:
Places and jurisdictions Places Policastro Bussentino, an Italian town and hamlet of Santa Marina, Campania Petilia Policastro, an Italian town and municipality in the province of Crotone, Calabria
Dioceses The former Roman Catholic Diocese of Policastro, and its precursor Buxentum = Bussento, which had its see in the town of Policastro Bussentino, and remains a Latin Catholic titular see as Capo della Foresta The current Roman Catholic Diocese of Teggiano-Policastro, created in 1986 with the union of the Dioceses of Policastro and Diano-Teggiano
People Paul Policastro (1900–1981), American politician who served in the New Jersey General Assembly