Nieborzyn [ɲɛˈbɔʐɨn] is a village in the administrative district of Gmina Czerwińsk nad Wisłą, within Płońsk County, Masovian Voivodeship, in east-central Poland. It lies approximately 10 kilometres (6 mi) north of Czerwińsk nad Wisłą, 19 km (12 mi) south of Płońsk, and 54 km (34 mi) north-west of Warsaw.