Alaşehir (), in Antiquity and the Middle Ages known as Philadelphia (Greek: Φιλαδέλφεια), i.e. "(city of) brotherly love" is a town and district of Manisa Province in the Aegean region of Turkey. It is situated in the valley of the Kuzuçay (Cogamus in antiquity), at the foot of the Bozdağ Mountain (Mount Tmolus in antiquity). The town is connected to İzmir by a km ( mi) railway. The longtime mayor is Gökhan Karaçoban.