Sarayan County (Persian: شهرستان سرایان) is a county in South Khorasan Province in Iran. The capital of the county is Sarayan. Sarayan is located in northwest of the province. Sarayan County belonged to Ferdows County until May 2004. The county consists of two districts (bakhsh): Central District and Seh Qaleh District. The county has one city: Sarayan.