Naurzum State Nature Reserve (Kazakh: Наурызым мемлекеттік табиғи қорығы, Nauryzym memlekettık tabiği qoryğy) is a nature reserve in Kostanay Region, Kazakhstan. It is part of the UNESCO heritage site Saryarka – Steppe and Lakes of Northern Kazakhstan. It protects about 3,081 square kilometres (1,190 sq mi) of steppes, semi desert and forests. The administrative office of the protected area is located in Karamendy village.