Baboszewo [babɔˈʂɛvɔ] is a village in Płońsk County, Masovian Voivodeship, in east-central Poland. It is the seat of the gmina (administrative district) called Gmina Baboszewo. It lies approximately 10 kilometres (6 mi) north-west of Płońsk and 72 km (45 mi) north-west of Warsaw.