Korzeń Królewski (Polish pronunciation: [ˈkɔʐɛj̃ kruˈlɛfskʲi]) is a village in the administrative district of Gmina Łąck, within Płock County, Masovian Voivodeship, in east-central Poland. It lies approximately 4 kilometres (2 mi) south of Łąck, 15 km (9 mi) south-west of Płock, and 98 km (61 mi) west of Warsaw.