Sinopoli is a comune, or municipality, located in the Province of Reggio Calabria within the Italian region of Calabria. It is situated approximately 90 km southwest of Catanzaro and about 30 km northeast of Reggio Calabria.
As of December 31, 2004, the municipality covered an area of 25.8 km² (10.0 sq mi) with a recorded population of 2,303 residents.