Rząśnik [ˈʐɔ̃ɕnik] (German: Schönwaldau) is a village in the administrative district of Gmina Świerzawa, within Złotoryja County, Lower Silesian Voivodeship, in south-western Poland. Until 1945 it was in Germany. After World War II the region was placed under Polish administration and ethnically cleansed according to the post-war Potsdam Agreement. The native German populace was expelled and replaced with Poles.