Supruny [suˈprunɨ] is a village in the administrative district of Gmina Michałowo, within Białystok County, Podlaskie Voivodeship, in north-eastern Poland, close to the border with Belarus. It lies approximately 12 kilometres (7 mi) south of Michałowo and 38 km (24 mi) south-east of the regional capital Białystok.