Bytnik [ˈbɨtnik] is a village in the administrative district of Gmina Głogów, within Głogów County, Lower Silesian Voivodeship, in south-western Poland. Prior to 1945 it was in Germany.

It lies approximately 6 km (4 mi) south-east of Głogów, and 84 km (52 mi) north-west of the regional capital Wrocław.