Manj District (Persian: بخش منج) is a district (bakhsh) in Lordegan County, Chaharmahal and Bakhtiari Province, Iran. At the 2006 census, its population was 17,232, in 3,266 families. The District has one city Manj-e Nesa. The District has two rural districts (dehestan): Barez Rural District and Manj Rural District.