The Melendiz River (Turkish: Uluırmak [1]), is a stream forming the Ihlara Valley in the territory of the Aksaray Province, Turkey.

In ancient times, its name was Potamus Kapadukus (Cappadocia River).

Melendós in antiquity), passes through Ihlara Valley and Aksaray city center and empties into Tuz Lake.

It is formed by the merging of springs and streams from the skirts of Melendiz Mountain.

It then flows into the Ihlara Valley, passing by villages such as Ihlara, Ilısu, Selime, the archaeological site of Aşıklı Höyük, and cuts through the heart of Aksaray city, splitting Aksaray into North-West and South-East.