Mecidiye is a neighborhood in Karacabey District, in Bursa Province, Türkiye. Mecidiye lies 3.3 km from the Anatolian plateau mountains. It has 930 inhabitants. The nearest city is Karacabey, 1.2 km to the east. Among the landmarks around are Dascylium (26 km), Apollonia ad Rhyndacum (28 km) and Cyzicus (45 km).