Nowa Wieś Kosowska [ˈnɔva ˈvjɛɕ kɔˈsɔfska] is a village in the administrative district of Gmina Kosów Lacki, within Sokołów County, Masovian Voivodeship, in east-central Poland. It lies approximately 5 kilometres (3 mi) east of Kosów Lacki, 20 km (12 mi) north of Sokołów Podlaski, and 93 km (58 mi) north-east of Warsaw.