Nowosiadło [nɔvɔˈɕadwɔ] is a village in the administrative district of Gmina Słubice, within Płock County, Masovian Voivodeship, in east-central Poland. It lies approximately 8 kilometres (5 mi) north of Słubice, 20 km (12 mi) south-east of Płock, and 78 km (48 mi) west of Warsaw.