Torbat-e Heydarieh County (Persian: شهرستان تربت حیدریه)[a] is in Razavi Khorasan province, Iran.

[2] Torbat-e Heydarieh County's population history and administrative structure over three consecutive censuses are shown in the following table.

The change of its name from Zaveh to Torbat-e Heydarieh is related to the life and tomb of this great Gnostic.

The existing cultural heritage belongs to Sasanian times and the 13th century: Bazeh Hovar and Robat Sefid temple, Ghotb-e-dinn Haydar, Sheikh Haydar, Sheikh Abolghasema, and Shoh Senjan tombs.

Media related to Torbat-e Heydarieh County at Wikimedia Commons