Próchnica [pruxˈnit͡sa] is a settlement in the administrative district of Gmina Stanin, within Łuków County, Lublin Voivodeship, in eastern Poland. It lies approximately 4 kilometres (2 mi) north-east of Stanin, 11 km (7 mi) west of Łuków, and 76 km (47 mi) north of the regional capital Lublin.