Uniszki Zawadzkie [uˈniʂki zaˈvat͡skʲɛ] is a village in the administrative district of Gmina Wieczfnia Kościelna, within Mława County, Masovian Voivodeship, in east-central Poland. It lies approximately 5 kilometres (3 mi) south-west of Wieczfnia Kościelna, 8 km (5 mi) north-east of Mława, and 113 km (70 mi) north of Warsaw.