Ossówno [ɔsˈsuvnɔ] is a village in the administrative district of Gmina Wierzbno, within Węgrów County, Masovian Voivodeship, in east-central Poland. It lies approximately 6 kilometres (4 mi) west of Wierzbno, 18 km (11 mi) south-west of Węgrów, and 55 km (34 mi) east of Warsaw.