Kościeliska [kɔɕt͡ɕɛˈliska] is a village in the administrative district of Gmina Radłów, within Olesno County, Opole Voivodeship, in south-western Poland.

[1] It lies approximately 14 kilometres (9 mi) north-east of Olesno and 54 km (34 mi) north-east of the regional capital Opole.

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