San Giovanni di Gerace (Greek-Calabrian dialect: Ièrax) is a comune (municipality) in the Province of Reggio Calabria in the Italian region Calabria, located about southwest of Catanzaro and about northeast of Reggio Calabria. As of 31 December 2004, it had a population of 577 and an area of .
San Giovanni di Gerace borders the following municipalities: Grotteria, Martone.