Stasin [ˈstaɕin] is a village in the administrative district of Gmina Długosiodło, within Wyszków County, Masovian Voivodeship, in east-central Poland. It lies approximately 5 kilometres (3 mi) west of Długosiodło, 18 km (11 mi) north of Wyszków, and 69 km (43 mi) north-east of Warsaw.