Bytków [ˈbɨtkuf] is a village in the administrative district of Gmina Reńska Wieś, within Kędzierzyn-Koźle County, Opole Voivodeship, in south-western Poland. It lies approximately 4 kilometres (2 mi) south-west of Reńska Wieś, 10 km (6 mi) south-west of Kędzierzyn-Koźle, and 43 km (27 mi) south of the regional capital Opole.