Trzcianka [ˈtʂt͡ɕaŋka] is a village in the administrative district of Gmina Janów, within Sokółka County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 10 kilometres (6 mi) east of Janów, 13 km (8 mi) north-west of Sokółka, and 42 km (26 mi) north of the regional capital Białystok.