Gmina Gorzów Śląski is an urban-rural gmina (administrative district) in Olesno County, Opole Voivodeship, in south-western Poland. Its seat is the town of Gorzów Śląski, which lies approximately 18 kilometres (11 mi) north of Olesno and 54 km (34 mi) north-east of the regional capital Opole.
The gmina covers an area of 154.12 square kilometres (59.5 sq mi), and as of 2019 its total population is 7,131.