Zaździerz [ˈzaʑd͡ʑɛʂ] is a village in the administrative district of Gmina Łąck, within Płock County, Masovian Voivodeship, in east-central Poland. It lies approximately 5 kilometres (3 mi) east of Łąck, 10 km (6 mi) south of Płock, and 94 km (58 mi) west of Warsaw.