Gmina Żarki is an urban-rural gmina (administrative district) in Myszków County, Silesian Voivodeship, in southern Poland. Its seat is the town of Żarki, which lies approximately 7 kilometres (4 mi) north-east of Myszków and 50 km (31 mi) north-east of the regional capital Katowice.
The gmina covers an area of 100.67 square kilometres (38.9 sq mi), and as of 2019 its total population is 8,446.