Radziwiłka [rad͡ʑiˈviu̯ka] is a village in the administrative district of Gmina Młodzieszyn, within Sochaczew County, Masovian Voivodeship, in east-central Poland. It lies approximately 2 kilometres (1 mi) north-west of Młodzieszyn, 11 km (7 mi) north of Sochaczew, and 57 km (35 mi) west of Warsaw.