Uściąż [ˈuɕt͡ɕɔ̃ʂ] is a village in the administrative district of Gmina Karczmiska, within Opole Lubelskie County, Lublin Voivodeship, in eastern Poland. It lies approximately 8 kilometres (5 mi) north of Karczmiska, 17 km (11 mi) north of Opole Lubelskie, and 41 km (25 mi) west of the regional capital Lublin.