Koroni  is a town and municipality in Messinia, Greece. Known asCorone by the Venetians , the town of Koroni, sits on the southwest peninsula of the Peloponnese on the Gulf of Messinia in southern Greece 45 minutes southwest of Kalamata. The town is nestled on a hill below an impressive Venetian castle and reaches  to the edge of the gulf. The town is the municipal seat of the surrounding Municipality of Koroni, which has a land area of 105.163 km² and a population of 5,06. The municipality's next largest towns are Charokopeió, Chrysokellariá, and Vasilítsi. It also includes the uninhabited offshore island of Venétiko