Qir and Karzin County (Persian: شهرستان قیر و کارزین - Shahrestan Qir va Karzin) is a county in Fars Province in Iran. The capital of the county is Qir. At the 2006 census, the county's population was 61,432, in 13,246 families. The county is subdivided into two districts: the Central District and Efzar District. The county has three cities: Efzar, Qir, and Karzin.