Gmina Żagań is a rural gmina (administrative district) in Żagań County, Lubusz Voivodeship, in western Poland. Its seat is the town of Żagań, although the town is not part of the territory of the gmina.
The gmina covers an area of 281.11 square kilometres (108.5 sq mi), and as of 2019 its total population is 7,324.