Kluczno [ˈklut͡ʂnɔ] is a settlement in the administrative district of Gmina Przystajń, within Kłobuck County, Silesian Voivodeship, in southern Poland. It lies approximately 10 kilometres (6 mi) south of Przystajń, 22 km (14 mi) south-west of Kłobuck, and 66 km (41 mi) north of the regional capital Katowice.