Sangar (Russian: Санга́р; Yakut: Сангаар, romanized: Sangaar) is an urban locality (an urban-type settlement) and the administrative center of Kobyaysky District of the Sakha Republic, Russia.

In 1934, the mine was transferred to the Chief Directorate of the Northern Sea Route, which at the time administrated most of the industrial activity in the north of the Soviet Union.

In June 1943, a fatal accident occurred in the mine, and twenty-two miners were killed.

Since the mine was providing most of the jobs, more than a half of the population of Sangar migrated and the infrastructure was considerably reduced.

[1] As an administrative division, it is, together with two rural localities, incorporated within Kobyaysky District as the Settlement of Sangar.