Mogielnica [mɔɡʲɛlˈnit͡sa] is a village in the administrative district of Gmina Korczew, within Siedlce County, Masovian Voivodeship, in east-central Poland. It lies approximately 5 kilometres (3 mi) north-west of Korczew, 33 km (21 mi) north-east of Siedlce, and 109 km (68 mi) east of Warsaw.