Zadoi County (Tibetan: རྫ་སྟོད་རྫོང་།, Wylie: rdza stod rdzong, ZYPY: Zadoi Zong ; also Dzatö or Dzatoe) is a county of Qinghai Province, China. It is under the administration of Yushu Tibetan Autonomous Prefecture. The county seat is in the Town of Qapugtang (Chinese: 萨呼腾 Sàhūténg).
Coordinates: 33°05′N 94°14′E / 33.083°N 94.233°E / 33.083; 94.233