Radostynia [radɔsˈtɨɲa] is a village in the administrative district of Gmina Biała, within Prudnik County, Opole Voivodeship, in south-western Poland. It lies approximately 4 kilometres (2 mi) north-east of Biała, 14 km (9 mi) north-east of Prudnik, and 32 km (20 mi) south-west of the regional capital Opole. Historically located in Upper Silesia, in the Prudnik Land.