Opaleniska [ɔpalɛˈɲiska] is a village in the administrative district of Gmina Grodzisko Dolne, within Leżajsk County, Subcarpathian Voivodeship, in south-eastern Poland. It lies approximately 5 kilometres (3 mi) south-west of Grodzisko Dolne, 15 km (9 mi) south of Leżajsk, and 32 km (20 mi) east of the regional capital Rzeszów.