Jasionów [jaˈɕɔnuf] is a village in the administrative district of Gmina Haczów, within Brzozów County, Subcarpathian Voivodeship, in south-eastern Poland. It lies approximately 6 kilometres (4 mi) east of Haczów, 6 km (4 mi) south-west of Brzozów, and 43 km (27 mi) south of the regional capital Rzeszów.