Aydıngün is a village in Arpaçay District, in Kars Province, Türkiye. Aydıngün lies at 2,134 m above sea level, in the Allahuekber mountains. It has 425 inhabitants. The nearest city is Kars, 48 km to the southwest. Near the border: Armenia, 13 km. Among the landmarks around are Vardzia (43 km), Marmashen Monastery (40 km) and Ch'ala church (7.1 km).