Maszewo [maˈʂɛvɔ] is a village in the administrative district of Gmina Stara Biała, within Płock County, Masovian Voivodeship, in east-central Poland. It lies approximately 5 kilometres (3 mi) south-west of Biała, 6 km (4 mi) west of Płock, and 102 km (63 mi) west of Warsaw.