Reggio di Calabria (Southern Calabrian: Riggiu; Calabrian Greek: Ρήγι, romanized: Rìji), commonly and officially referred to as Reggio Calabria, or simply Reggio by its inhabitants, is the largest city in Calabria as well as the seat of the Metropolitan City of Reggio Calabria. As of 2025, it has 168,572 inhabitants and is the twenty-first most populous city in Italy, after Modena and other Italian cities. Reggio Calabria is located near the center of the Mediterranean and is known for its climate, ethnic and cultural diversity. It is the third economic centre of mainland Southern Italy. About 511,935 people live in its metropolitan city.
Reggio is located on the "toe" of the Italian Peninsula and is separated from the island of Sicily by the Strait of Messina. It is situated on the slopes of the Aspromonte, a long, craggy mountain range that runs up through the centre of the region.