Küçükorhan is a neighborhood in Orhaneli District, in Bursa Province, Türkiye. Küçükorhan lies at 964 m above sea level, in the Anatolian plateau mountains. It has 99 inhabitants. The nearest city is Bursa, 43 km to the north. Among the landmarks around are Hadriani ad Olympum (11.9 km) and Büyükorhan Dam (10.0 km).