Koçu is a neighborhood in Orhaneli District, in Bursa Province, Türkiye. Koçu lies at 687 m above sea level, in the Uludağ mountains. It has 159 inhabitants. The nearest city is Beşevler, 20 km to the northeast. Among the landmarks around are Grand Mosque of Bursa (23 km), Orhan Gazi Mosque (23 km) and Green Mosque (24 km). Among the natural features are Ayvaini Cave (15.8 km).