Balıkesir Province (Turkish: Balıkesir ili) is a province in midwestern Turkey, having coastlines on both the Sea of Marmara and the Aegean. Its adjacent provinces are Çanakkale to the west, İzmir to the southwest, Manisa to the south, Kütahya to the southeast, and Bursa to the east. The provincial capital is Balıkesir City.