Sułoszyn [suˈwɔʂɨn] is a village in the administrative district of Gmina Firlej, within Lubartów County, Lublin Voivodeship, in eastern Poland. It lies approximately 5 kilometres (3 mi) north of Firlej, 16 km (10 mi) north of Lubartów, and 40 km (25 mi) north of the regional capital Lublin.