Karolew [kaˈrɔlɛf] is a village in the administrative district of Gmina Gąbin, within Płock County, Masovian Voivodeship, in east-central Poland. It lies approximately 8 kilometres (5 mi) north of Gąbin, 10 km (6 mi) south of Płock, and 91 km (57 mi) west of Warsaw.