Lake Vyalozero (Russian: Вялозеро) is a large freshwater lake on the Kola Peninsula, Murmansk Oblast, Russia.

Vyala River, a tributary of the Umba, flows from the lake.

In 1998, 12 years after the Chernobyl disaster, Lake Vyalozero contained 1.8 times the amount of Cesium-137 compared to Lake Inari.

Some paleoglaciologists have suggested that the Lake Vyalozero-Munozero was the western extent of the Fenno-Scandian ice sheet, though this has been disputed.

[3] This Murmansk Oblast location article is a stub.