Korczowiska [kɔrt͡ʂɔˈviska] is a village in the administrative district of Gmina Raniżów, within Kolbuszowa County, Subcarpathian Voivodeship, in south-eastern Poland. It lies approximately 7 kilometres (4 mi) north-east of Raniżów, 22 km (14 mi) east of Kolbuszowa, and 30 km (19 mi) north of the regional capital Rzeszów.