Mieszki Wielkie [ˈmjɛʂki ˈvjɛlkʲɛ] is a village in the administrative district of Gmina Ciechanów, within Ciechanów County, Masovian Voivodeship, in east-central Poland. It lies approximately 6 kilometres (4 mi) south of Ciechanów and 72 km (45 mi) north of Warsaw.