Czarnowo [t͡ʂarˈnɔvɔ] is a village in the administrative district of Gmina Goworowo, within Ostrołęka County, Masovian Voivodeship, in east-central Poland. It lies approximately 3 kilometres (2 mi) south-west of Goworowo, 21 km (13 mi) south of Ostrołęka, and 83 km (52 mi) north-east of Warsaw.