Popowo-Letnisko [pɔˈpɔvɔ lɛtˈniskɔ] is a village in the administrative district of Gmina Somianka, within Wyszków County, Masovian Voivodeship, in east-central Poland. It lies approximately 12 kilometres (7 mi) west of Somianka, 23 km (14 mi) west of Wyszków, and 38 km (24 mi) north of Warsaw.