Białosuknia [bjawɔˈsukɲa] is a village in the administrative district of Gmina Goniądz, within Mońki County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 8 kilometres (5 mi) east of Goniądz, 10 km (6 mi) north of Mońki, and 46 km (29 mi) north-west of the regional capital Białystok.