Trzcianka [ˈtʂt͡ɕaŋka] is a village in the administrative district of Gmina Brańszczyk, within Wyszków County, Masovian Voivodeship, in east-central Poland. It lies approximately 4 kilometres (2 mi) north-west of Brańszczyk, 9 km (6 mi) north-east of Wyszków, and 61 km (38 mi) north-east of Warsaw.