Poshtkuh Rural District (Persian: دهستان پشتكوه) is a rural district (dehestan) in , Khash County, Sistan and Baluchestan province, Iran. At the 2006 census, its population, including portions split off to form , was 13,612, in 2,469 families. The rural district has 53 villages. At the 2016 census, its population was 5,933.