The Metropolis of Nafpaktos and Agios Vlasios (Greek: Ιερά Μητρόπολις Ναυπάκτου και Αγίου Βλασίου) is a metropolitan see of the Church of Greece. Its seat is the town of Nafpaktos (Naupaktos or Naupactus, in the late Middle Ages known as Lepanto) in southeastern Aetolia-Acarnania, and occupies the municipality of Nafpaktia and the municipal unit of Parakampylia of the Agrinio municipality. The current metropolitan (since 1995) is Hierotheos (Vlachos).