Preveza is a town in north-western Greece. It is the capital of Preveza Prefecture, which is part of Epirus periphery. A new tunnel, which runs between Preveza and Aktio, connects the town to Thesprotia and Lefkada and western Aetolia in Aetolia-Acarnania. Preveza lies near the western part of the Ambracian Gulf. The ruins of the ancient city Nicopolis lie 5 km north of the city.
Preveza is the location of the 1538 Battle of Preveza, where the outnumbered Turkish fleet of Barbarossa defeated Andrea Doria.