Zerkalnoye (Russian: Зеркальное) is a salt lake in Shipunovsky District, Altai Krai, Russian Federation.

The lake lies roughly in the middle of the Krai. The nearest town is Zerkaly by the southern lakeshore. Shipunovo, the district capital, lies 44 kilometers (27 mi) to the southeast.

Zerkalnoye is at the sources of the Barnaulka river. It lies in one of the wide ravines of glacial origin that cut diagonally across the Ob Plateau slanting towards the Ob River. The lake has an elongated shape, stretching roughly from northeast to southwest for over 11 kilometers (6.8 mi). The bottom of the lake is composed of grey silt in 57% of the total area, and of sand and silt in the remaining part.

Lake Gorkoye is located in the same trench 17 kilometers (11 mi) to the southwest and Sredneye 9 kilometers (5.6 mi) to the northeast. Gorkoye lies 21 kilometers (13 mi) to the northwest and Bolshoye Ostrovnoye 22 kilometers (14 mi) to the north.

The ribbon pine forest characteristic of the Ob Plateau grows in places close to the lake. Reeds and bulrushes are found in certain sections of the lakeshore and submerged aquatic plants grow further off the shore.

Regarding the fauna of the lake, the larvae of lake flies and mayflies, amphipods, water bugs, ramshorn snails and bivalves deserve mention.

• List of lakes of Russia

• Peculiarities of Macrozoobenthos in Lakes of Different Mineralization of the Southern Section of the Ob-Irtysh Interfluve