Cisek [ˈt͡ɕisɛk] (German: Czissek) is an agricultural village in Kędzierzyn-Koźle County, Opole Voivodeship, in south-western Poland. It is the seat of the gmina (administrative district) called Gmina Cisek. It lies approximately 8 kilometres (5 mi) south from Kędzierzyn-Koźle and 47 km (29 mi) south-east from the regional capital Opole.