Jadwisin [jadˈviɕin] is a village in the administrative district of Gmina Strachówka, within Wołomin County, Masovian Voivodeship, in east-central Poland. It lies approximately 3 kilometres (2 mi) north-west of Strachówka, 30 km (19 mi) east of Wołomin, and 51 km (32 mi) north-east of Warsaw.