Nowosielec [nɔvɔˈɕɛlɛt͡s] is a village in the administrative district of Gmina Nisko, within Nisko County, Subcarpathian Voivodeship, in south-eastern Poland. It lies approximately 10 kilometres (6 mi) south of Nisko and 48 km (30 mi) north of the regional capital Rzeszów.