Mudanya (Mudania, Greek: τα Μουδανιά [Pl.]) (the site of ancient Apamea Myrlea), is a town and district of Bursa Province in the Marmara region of Turkey. It is located on the Gulf of Gemlik, part of the south coast of the Sea of Marmara. As of 1911, it was connected with Bursa by a railway and a carriage road, and with Istanbul by steamers. Mudanya has only an open anchorage usable in calm weather. The town produces olive oil and there is a pier used by local fishing and cargo boats.
The town was the signing place of the Armistice of Mudanya between Turkey, Italy, France and Britain on October 11, 1922, following the Turkish War of Independence.
After the Treaty of Lausanne, the Greek population of the town was transferred into mainland Greece, establishing a settlement in which they gave the name of their previous city, Nea Moudania (New Moudania, Chalkidiki peninsula, Macedonia). Some Greek-speaking Muslims from Crete settled in turn in Mudanya.
Building where the Armistice of Mudanya was signed.