Üyük is a village in Yıldızeli District, in Sivas Province, Türkiye. Üyük lies at 1,276 m above sea level, 3.0 km from the Çamlıbel Dağları mountains. It has 145 inhabitants. The nearest city is Akdağmadeni, 42 km to the southwest. Among the landmarks around are Šamuḫa (31 km).