Kyzyltuz (Kazakh: Қызылтұз; Russian: Кызылтуз) is a salt lake in Akkuly District, Pavlodar Region, Kazakhstan.

[1] The lake is located 17 kilometers (11 mi) to the west of Malybay village, about 60 kilometers (37 mi) west of the Russia-Kazakhstan border.

Akkuly, the district capital, lies 34 kilometers (21 mi) to the southwest.

This is in clear contrast with the other lakes in the area which display blue or green hues.

[3][2][1][4] Lake Kyzyltuz is surrounded by steppe vegetation.