Rząsiny [ʐɔ̃ˈɕinɨ], until 1945 Wilcza-Góra, is a village in the administrative district of Gmina Gryfów Śląski, within Lwówek Śląski County, Lower Silesian Voivodeship, in south-western Poland. It lies approximately 7 kilometres (4 mi) north of Gryfów Śląski, 11 km (7 mi) west of Lwówek Śląski, and 112 km (70 mi) west of the regional capital Wrocław.