Dereköy is a village in Sason District, in Batman Province, Türkiye. Dereköy lies at 949 m above sea level, in the Southeastern Taurus mountains. It has 1,026 inhabitants. The nearest city is Kozluk, 20 km to the southeast. Among the landmarks around are Malabadi Bridge (28 km), Hallan Çemi (19.5 km) and Tigranocerta (41 km).