Kamion [ˈkamjɔn] is a village in the administrative district of Gmina Nowy Duninów, within Płock County, Masovian Voivodeship, in east-central Poland. It lies approximately 3 kilometres (2 mi) west of Nowy Duninów, 19 km (12 mi) west of Płock, and 114 km (71 mi) west of Warsaw.