Trzcianka [ˈtʂt͡ɕaŋka] is a village in the administrative district of Gmina Regimin, within Ciechanów County, Masovian Voivodeship, in east-central Poland. It lies approximately 4 kilometres (2 mi) east of Regimin, 8 km (5 mi) north of Ciechanów, and 84 km (52 mi) north of Warsaw.