Stare Bosewo [ˈstarɛ bɔˈsɛvɔ] is a village in the administrative district of Gmina Długosiodło, within Wyszków County, Masovian Voivodeship, in east-central Poland. It lies approximately 3 kilometres (2 mi) west of Długosiodło, 21 km (13 mi) north of Wyszków, and 73 km (45 mi) north-east of Warsaw.