Kalkaman (Kazakh: Қалқаман), also known as Kalkamantuz (Kazakh: Қалқамантұз), are two salt lakes in the Aksu City Administration, Pavlodar Region, Kazakhstan.

[1][2] The Kalkaman lakes are located 22 kilometers (14 mi) to the WSW of Aksu City and 33 kilometers (21 mi) to the ENE of Kalkaman village.

The nearest village is Pogranichnik 5 kilometers (3.1 mi) to the NW.

[4] Kalkaman is a system of two endorheic lakes in the Irtysh Basin.

The area around the lakeshores is used as pasture for local cattle.