Ertuğrul is a neighborhood in Nilüfer District, in Bursa Province, Türkiye. Ertuğrul lies at 68 m above sea level, 4.8 km from the Uludağ mountains. It has 12,708 inhabitants. The nearest city is Balat, 5.0 km to the northeast. Among the landmarks around are Grand Mosque of Bursa (13.2 km), Orhan Gazi Mosque (13.4 km) and Green Mosque (14.3 km). Among the natural features are Ayvaini Cave (21 km).