The Kepenek Castle (), is a historical Urartian castle on the mountain slope in the central district of Muà Â, Turkey.
Kepenek Castle is 3âÂÂ4 km from the city centre. This structure, located in the southeast, is located in the area between Donatñm and Kepenek. This architectural structure, extending in the shape of a cape towards the east, is 25 m from the road. As high as 1392 m. It is located on a hill with altitude. An inscription belonging to Urartian King Argisti I (785-765 BC) was unearthed near Kepenek Castle. The inscription is now under protection by the Muà  Provincial Directorate of Culture and Tourism. The inscription in question reads: