Trzcianne [ˈtʂt͡ɕannɛ] (Lithuanian: Tžcianai) is a village in Mońki County, Podlaskie Voivodeship, in north-eastern Poland. It is the seat of the gmina (administrative district) called Gmina Trzcianne. It lies approximately 11 kilometres (7 mi) south-west of Mońki and 41 km (25 mi) north-west of the regional capital Białystok. It is close to Biebrza National Park. The village has a population of 610.