Gmina Błędów is a rural gmina (administrative district) in Grójec County, Masovian Voivodeship, in east-central Poland. Its seat is the village of Błędów, which lies approximately 16 kilometres (10 mi) south-west of Grójec and 53 km (33 mi) south-west of Warsaw.
The gmina covers an area of 135.23 square kilometres (52.2 sq mi), and as of 2006 its total population is 7,905.