Harunköy is a village in Şarkışla District, in Sivas Province, Türkiye. Harunköy lies at 1,399 m above sea level, 3.3 km from the İncebel Dağları mountains. It has 171 inhabitants. The nearest city is Şarkışla, 11.9 km to the southwest. Among the landmarks around are Maksutlu Dam (3.9 km), Šamuḫa (24 km) and Gazibey Dam (14.1 km).