Fasa County () is a county in Fars Province in Iran. The capital of the county is Fasa. At the 2006 census, the county's population was 188,189, in 45,333 families. The county is subdivided into four districts: the Central District, Now Bandegan District, Sheshdeh and Qarah Bulaq District, and Shibkaveh District. The county has six cities: Fasa, Zahedshahr, Now Bandegan, Sheshdeh, Qarah Bolagh & Miyanshahr.