Turshiz (Persian: ترشیز Turshēz), also known as Turaythith (Persian: طریثیث), is a medieval district and city of the Quhistan region. It corresponds to the Kashmar area, located in the present-day Razavi Khorasan Province, Iran. This region is divided into four regions Kashmar County, Kuhsorkh County, Khalilabad County and Bardaskan County.[1]