Justynów [jusˈtɨnuf] is a village in the administrative district of Gmina Młodzieszyn, within Sochaczew County, Masovian Voivodeship, in east-central Poland. It lies approximately 3 kilometres (2 mi) west of Młodzieszyn, 10 km (6 mi) north-west of Sochaczew, and 58 km (36 mi) west of Warsaw.