Mszanna [ˈmʂanna] is a village in the administrative district of Gmina Olszanka, within Łosice County, Masovian Voivodeship, in east-central Poland. It lies approximately 6 kilometres (4 mi) east of Olszanka, 8 km (5 mi) south of Łosice, and 120 km (75 mi) east of Warsaw.