Gmina Iłża is an urban-rural gmina (administrative district) in Radom County, Masovian Voivodeship, in east-central Poland. Its seat is the town of Iłża, which lies approximately 27 kilometres (17 mi) south of Radom and 118 km (73 mi) south of Warsaw.
The gmina covers an area of 255.82 square kilometres (98.8 sq mi), and as of 2006 its total population is 15,624 (out of which the population of Iłża amounts to 5,165, and the population of the rural part of the gmina is 10,459).