Tuz (; ) is a salt lake in Akkuly District, Pavlodar Region, Kazakhstan.
The lake is located about west of the Russia-Kazakhstan border. Akkuly, the district capital, lies to the WNW. The border of Abai Region stretches close to the southern lakeshore.
Tuz is an endorheic lake part of the Irtysh basin. It lies in a tectonic depression at the southern end of the Kulunda Plain. Lake Shoshkaly stretches to the southeast, Sharbakty to the WNW, Malybay to the NNW, Sormoildy to the ENE, and lake Tengizsor to the south. River Irtysh flows to the west.
The lake has a slightly elongated shape oriented in a roughly southeastâÂÂnorthwest direction. It doesn't dry out in the summer and doesn't freeze in the winter. Tosagash village lies from the eastern lakeshore. The M38 Highway from the Border of Russia to Pavlodar and Semey (Semipalatinsk), passes to the southwest of the lake.
Lake Tuz is surrounded by steppe vegetation.