Sharbakty (Kazakh: Шарбақты; Russian: Щербакты) is a salt lake in Akkuly District, Pavlodar Region, Kazakhstan.

The lake is located about 80 kilometers (50 mi) west of the Russia-Kazakhstan border. Akkuly, the district capital, lies 32 kilometers (20 mi) to the WNW.

Sharbakty is an endorheic lake part of the Irtysh basin. It lies in a tectonic depression of the Kulunda Plain. Toleuberdy (Толеуберды), a small lake, is located 1.6 kilometers (0.99 mi) from the southwestern shore. Lake Uyaly lies 5 kilometers (3.1 mi) to the south, Malybay 24 kilometers (15 mi) to the north and red lake Kyzyltuz 28 kilometers (17 mi) to the NNW. River Irtysh flows 18 kilometers (11 mi) to the southwest.

The lake has a regular, almost round, shape. It doesn't dry out in the summer and doesn't freeze in the winter. Sharbakty village lies by the eastern lakeshore. The M38 Highway from the Border of Russia to Pavlodar and Semey (Semipalatinsk), passes near the northern end of the lake.

Lake Sharbakty is surrounded by steppe vegetation.

• List of lakes of Kazakhstan

• Hydrochemical Research and Geochemical Classification of Salt Lakes in the Pavlodar Region