The Kaniv Reservoir () is a reservoir located on the Dnieper river in the Ukrainian oblasts of Cherkasy and Kyiv. Named after the city of Kaniv, the reservoir has a length of 162 km, a maximum width of 5 km, an area of 675 km<sup>2</sup>, an average depth of 5.5 meters, and a volume of 2.6 km<sup>3</sup>. Its water level is maintained by a dam of the Kaniv Hydroelectric Power Plant, built in 1972.
The Kaniv, Kakhovka, Dnieper, Kamianske, Kremenchuk, and Kyiv reservoirs form the Dnieper reservoir cascade, a deep-water route on the Dnieper that allows ships to sail upstream as far as the Prypiat river.