Allakh-Yun (Russian: Алла́х-Юнь; Yakut: Ааллаах Үүн) is an urban locality (an urban-type settlement) in Ust-Maysky District of the Sakha Republic, Russia, located 306 kilometers (190 mi) from Ust-Maya, the administrative center of the district,[2] in the Yudoma-Maya Highlands on the right bank of the Allakh-Yun River, after which it was named.

[3] It was founded in the 1930s as the first gold prospecting center in the region[citation needed] and was granted urban-type settlement status in 1937.

With the cessation of mining activities in the 1990s, almost the entire population left.

This is its only connection to the outside world, since the closure of the small local airport in the 1990s.

Allakh-Yun has a monsoon-influenced, extreme subarctic climate (Köppen climate classification Dwd) with long, extremely cold and dry winters and short, very mild summers.