Kahrizak District (Persian: بخش کهریزک) is a district (bakhsh) in Rey County, Tehran Province, Iran. At the 2006 census, its population was 129,607, in 31,295 families. The District has two cities: Kahrizak and Baqershahr. The District has one rural district (dehestan): Kahrizak Rural District. Up until 16 September 2012, Qaleh Now Rural District, including all the villages now in Chaleh Tarkhan Rural District was part of Kahrizak District. the two mentioned rural districts separated from Kahrizak District, forming Qaleh Now District.