Trościanka [trɔɕˈt͡ɕaŋka] is a village in the administrative district of Gmina Wojsławice, within Chełm County, Lublin Voivodeship, in eastern Poland. It lies approximately 5 kilometres (3 mi) south-west of Wojsławice, 29 km (18 mi) south of Chełm, and 77 km (48 mi) south-east of the regional capital Lublin.