Zhyngyldy or Zhyngyldysor (Kazakh: Жыңғылдысор) is a salt lake in the Ekibastuz City Administration, Pavlodar Region, Kazakhstan.

[1] Zhyngyldy is one of the main lakes in the area surrounding Ekibastuz and is part of the Irtysh Water Management Basin.

The reservoir was formed by filling an endorheic intermittent lake (sor) with water from the Irtysh–Karaganda Canal in order to cool the adjacent thermal power station.

Lake Shandaksor, with the Ekibastuz GRES-2 Power Station by its eastern shore, lies 8 kilometers (5.0 mi) to the north of the northern lakeshore.

The lakeshores are flat and the surrounding area is used for local livestock grazing.