Krasnodar Reservoir, Water reservoir in Krasnodar Krai, Russia.

Krasnodar Reservoir is an artificial lake on the Kuban River, mostly in the Republic of Adygea with a smaller part in Krasnodar Krai. It covers 420 km², runs 46 km long and up to 20 km wide, with an average depth of 5.5 m and 20 m at the dam. Its eastern part absorbed the Tshchik Reservoir of 1940, and the water level fluctuates by 8 m.

The USSR Council of Ministers approved the project on 22 July 1967, and construction of the dam began on 3 April 1968. About 13,000 people from twelve fully and ten partly flooded villages were resettled, mostly to the new town of Adygeysk and the settlement of Tlyustenkhabl. Filling started in 1973 and the reservoir was commissioned on 4 December 1975, incorporating the 1940 Tshchik Reservoir in its eastern part.

Local residents still call the eastern section, formed from the 1940 Tshchik Reservoir and cut off by a half-flooded dam, by its old name; it is a favourite spot for amateur anglers. The reservoir's other name, Kuban Sea, is used alongside the official one.

The reservoir lies east of Krasnodar, mostly in Adygea; the dam and its sluices, fitted with a fish lift, stand near the city. Water level is regulated and can swing by 8 m, so banks and inlets shift through the year. Navigation has stopped because of silting, but the eastern part, the old Tshchik reservoir, is popular with amateur anglers.

The eastern section of the reservoir absorbed the smaller Tshchik Reservoir, built in 1940; its dam, raised by hand, failed in the 1966 flood and submerged 300,000 hectares of farmland. Locals still call that half-flooded dam by its old name, and amateur fishermen favour it.