Gmina Kluczbork is an urban-rural gmina (administrative district) in Kluczbork County, Opole Voivodeship, in south-western Poland. Its seat is the town of Kluczbork, which lies approximately north-east of the regional capital Opole.
The gmina covers an area of , and as of 2019 its total population is 35,896.
The gmina contains part of the protected area called Stobrawa Landscape Park.
Apart from the town of Kluczbork, Gmina Kluczbork contains the villages and settlements of Bàków, Baà ¼any, Biadacz, Bogacica, Bogacka Szklarnia, Bogdaà Âczowice, Borkowice, Czaple Wolne, Gotartów, Krasków, Krzywizna, Kujakowice Dolne, Kujakowice Górne, Kuniów, Ligota Dolna, Ligota Górna, Ligota Zamecka, à Âowkowice, Maciejów, Nowa Bogacica, Przybkowice, Smardy Dolne, Smardy Górne, Stare Czaple, Unieszów and à »abiniec.
Gmina Kluczbork is bordered by the gminas of Byczyna, Gorzów à Âlàski, Lasowice Wielkie, Murów, Olesno and Woà Âczyn.
Gmina Kluczbork is twinned with: