Lake Bustakh (Russian: Бустах; Yakut: Буустаах, Buustaax) is a large freshwater lake in Ust-Yansky District, Sakha Republic, Russia.

Lake Bustakh freezes up in late September and stays icebound until June.

[1] With an area of 249 square kilometers (96 sq mi) it is one of the largest lakes of the Yana-Indigirka Lowland.

[2] The lake lies close to the Ebelyakh Bay of the Laptev Sea.

[3][4] This Sakha Republic location article is a stub.