Kiersnowo [kʲɛrsˈnɔvɔ] is a village in the administrative district of Gmina Brańsk, within Bielsk County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 8 kilometres (5 mi) south-east of Brańsk, 19 km (12 mi) west of Bielsk Podlaski, and 48 km (30 mi) south of the regional capital Białystok.