Lake Manzherok (Manzherok, Altay : Manјӱrek, Manĵürek) is a lake in the Altai Republic, located on the right bank of the Katun, at an altitude of 373 m above sea level. The Altai name of the lake is Doingol. The length of the lake is 1112 m, the maximum width is 400 m, the depth is 2.5-2.8 m, and the area is 37.6 ha. The village of the same name is located 2 km from the lake, on the banks of the Katun River.