Gmina Poświętne is a rural gmina (administrative district) in Opoczno County, Łódź Voivodeship, in central Poland. Its seat is the village of Poświętne, approximately 18 kilometres (11 mi) north of Opoczno and 69 km (43 mi) southeast of the regional capital Łódź.
The gmina covers 140.87 square kilometres (54.4 sq mi)s. As of 2006 its total population is 3,318.