Kosmowo [kɔsˈmɔvɔ] is a village in the administrative district of Gmina Czernice Borowe, within Przasnysz County, Masovian Voivodeship, in east-central Poland. It lies approximately 6 kilometres (4 mi) north of Czernice Borowe, 15 km (9 mi) north-west of Przasnysz, and 99 km (62 mi) north of Warsaw.