Kostanay or Qostanai is a city located on the Tobol River in northern Kazakhstan. It is the administrative center of the Kostanay Region. A…Kostanay or Qostanai is a city located on the Tobol River in northern Kazakhstan. It is the administrative center of the Kostanay Region. As of 24 March 2022, the city's governor is Marat Zhundubayev.