The Kuyto ( ) are three lakes in the Republic of Karelia, in the northwestern part of Russia. The Kuyto lakes are connected by natural canals, and are used for timber rafting.
- Upper Kuyto (, ) is located at . It has an area of 198 km<sup>2</sup>, surface elevation of 103 m and a maximum depth of 44 m.
- Middle Kuyto (, ) is located at and has an area of 257 km<sup>2</sup>, surface elevation of 101 m and a maximum depth of 34 m.
- Lower Kuyto (, ) is located at and has an area of 141 km<sup>2</sup>, surface elevation of 100 m and a maximum depth of 33 m. Lower Kuyto terminates at a dam built in 1956, below which flows the Kem River.
There are numerous islands on Kuyto Lakes.
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