Kupna [ˈkupna] is a village in the administrative district of Gmina Krzywcza, within Przemyśl County, Subcarpathian Voivodeship, in south-eastern Poland. It lies approximately 4 kilometres (2 mi) south-east of Krzywcza, 15 km (9 mi) west of Przemyśl, and 51 km (32 mi) south-east of the regional capital Rzeszów.