Khoshab county (Persian: شهرستان خوشاب) is a county in Razavi Khorasan Province in Iran. The capital of the county is Soltanabad. It was separated from Sabzevar County in September 2010. At the 2006 census, its population was 37,600, in 9,944 families. The county is subdivided into two districts (bakhsh): the Central District and Meshkan District.