Heishui County (; ; Qiang: Vvlukvua) is a county in the north of Sichuan Province, China. It is under the administration of the Ngawa Tibetan and Qiang Autonomous Prefecture. The county has an area of and its average elevation is . As of 2016, the county has a population of 61,744.
Heishui County has jurisdiction over 8 towns and 7 townships: