Siderno is a town and comune in the Metropolitan City of Reggio Calabria, Calabria, southern Italy, about 3 kilometres from Locri.
Siderno Marina is the newer town located on the Ionian coast. It is a destination for both Italian and foreign tourists and has a bathing beach.
Siderno Superiore is the old town, higher up on the flank of the coastal mountain range. It has historic palaces, old buildings and very narrow streets. It has now become a ghost town because most of the old population has moved to the more modern Siderno which is the new city and offers more job opportunities and services.