Firuzkuh County (Persian: شهرستان فیروزکوه) is a county in Tehran Province in Iran. The capital of the county is Firuzkuh. At the 2006 census, the county's population was 37,416, in 10,414 families. The county is subdivided into two districts: the Central District and Arjomand District. The county has three cities: Firuzkuh and Arjomand.