Mleczno [ˈmlɛt͡ʂnɔ] is a village in the administrative district of Gmina Rudna, within Lubin County, Lower Silesian Voivodeship, in south-western Poland. It lies approximately 5 kilometres (3 mi) south of Rudna, 9 km (6 mi) north-east of Lubin, and 66 km (41 mi) north-west of the regional capital Wrocław.