Chwastnica [xfastˈnit͡sa] is a village in the administrative district of Gmina Domaniów, within Oława County, Lower Silesian Voivodeship, in south-western Poland.

It lies approximately 4 kilometres (2 mi) north of Domaniów, 13 kilometres (8 mi) west of Oława, and 23 kilometres (14 mi) south of the regional capital Wrocław.