Leśniewo Dolne [lɛɕˈɲɛvɔ ˈdɔlnɛ] is a village in the administrative district of Gmina Grudusk, within Ciechanów County, Masovian Voivodeship, in east-central Poland. It lies approximately 9 kilometres (6 mi) south of Grudusk, 13 km (8 mi) north of Ciechanów, and 89 km (55 mi) north of Warsaw.