Radzymin [raˈd͡zɨmin] is a village in the administrative district of Gmina Naruszewo, within Płońsk County, Masovian Voivodeship, in central Poland. It lies approximately 4 kilometres (2 mi) north of Naruszewo, 8 km (5 mi) south of Płońsk, and 58 km (36 mi) north-west of Warsaw.