Kupce [ˈkupt͡sɛ] is a village in the administrative district of Gmina Korytnica, within Węgrów County, Masovian Voivodeship, in east-central Poland. It lies approximately 8 kilometres (5 mi) north-west of Korytnica, 19 km (12 mi) west of Węgrów, and 58 km (36 mi) north-east of Warsaw.