Dereköy is a village in Kangal District, in Sivas Province, Türkiye. Dereköy lies at 1,547 m above sea level, in the Deli Dağ mountains. It has 50 inhabitants. The nearest city is Sivas, 54 km to the northwest. Among the landmarks around are Kussara (9.3 km) and Divriği Great Mosque and Hospital (52 km).