Budne-Żarnowo [ˈbudnɛ ʐarˈnɔvɔ] is a village in the administrative district of Gmina Goniądz, within Mońki County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 3 kilometres (2 mi) north-west of Goniądz, 14 km (9 mi) north-west of Mońki, and 53 km (33 mi) north-west of the regional capital Białystok.