Naghan District (Persian: بخش ناغان‎‎) is a district (bakhsh) in Kiar County, Chaharmahal and Bakhtiari Province, Iran. At the 2006 census, its population was 8,214, in 1,949 families. The District has one city: Naghan. The district formerly belonged to Ardal County. The District has two rural districts (dehestan): Mashayekh Rural District and Naghan Rural District.