Santo Stefano in Aspromonte is a comune located in the Calabria region of southern Italy. It is situated within the Province of Reggio Calabria, positioned approximately 110 kilometres southwest of Catanzaro and about 12 kilometres northeast of Reggio Calabria.
As of December 31, 2025, the municipality covers an area of 17.7 square kilometres and has a population of 1,001 residents.