Numto (Russian: Нумто) is a freshwater lake in Khanty-Mansi Autonomous Okrug, Russia.

[1][2] The village of Numto, part of the Kazym rural settlement, is located at the southwestern of the lake by its shore.

[4] The lake is part of an integrated 597,189.5 hectares (1,475,687 acres) protected area which was established in 1997 in Beloyarsky District[5] and which is complemented by the Numto Natural Park in adjacent Nadymsky District of Yamalo-Nenets Autonomous Okrug to the north.

There is a small heart-shaped island near the western end of the lake that is a sacred place in local shamanism.

The area of the lake is covered with sparse larch taiga and swamps.