Chojnowo [xɔi̯ˈnɔvɔ] is a village in the administrative district of Gmina Trzcianne, within Mońki County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 5 kilometres (3 mi) north-west of Trzcianne, 11 km (7 mi) west of Mońki, and 45 km (28 mi) north-west of the regional capital Białystok.