Üçkaya is a village in Tuzluca District, in Iğdır Province, Türkiye. Üçkaya lies at 1,492 m above sea level, in the Taşkom Dağları mountains. It has 450 inhabitants. The nearest city is Iğdır, 33 km to the east. Near the border: Armenia, 14 km. Among the landmarks around are Argištiḫinili (32 km), Yervandashat (17.4 km) and Agarak monastery (0.7 km).