Belcastro is a comune in the province of Catanzaro, in the Calabria region of southern Italy. It is one of the many small administrative towns that make up this part of Calabria, situated in the southern portion of the Italian peninsula.
As a comune, Belcastro forms the basic unit of local government in Italy, encompassing both its central settlement and the surrounding territory. It falls within the jurisdiction of the province of Catanzaro, whose capital is the city of Catanzaro.
Belcastro is located in Calabria, the region that forms the "toe" of the Italian peninsula. The comune shares the region's broader geographic context with the other towns and villages of the Catanzaro province.