Aksu is a village in Sincik District, in Adıyaman Province, Türkiye. Aksu lies at 1,533 m above sea level, in the Malatya Dağları mountains. It has 530 inhabitants. The nearest city is Tecde, 26 km to the northwest. Among the landmarks around are Arslantepe (27 km), Arsameia (28 km) and Severan Bridge (27 km).