Brzezina [bʐɛˈʑina] (German: Grünweiler) is a village in the administrative district of Gmina Cieszków, within Milicz County, Lower Silesian Voivodeship, in south-western Poland. It lies approximately 6 kilometres (4 mi) west of Cieszków, 10 kilometres (6 mi) north of Milicz, and 58 kilometres (36 mi) north of the regional capital Wrocław.