The Uryung-Ulakh or Yuryung-Ulakh (Russian: Урюнг-Улах or Юрюнг-Уулаах; Yakut: Үрүҥ Уулаах, Ürün Uulaax) is a river in the Sakha Republic (Yakutia), Russia.

[1] The river flows north of the Arctic Circle, across territories of the East Siberian Lowland in Allaikhovsky District marked by permafrost.

The river heads first roughly southeastwards across a tundra area of swamps and numerous small lakes.

[2][4][3] The main tributary of the Uryung-Ulakh is the 50 km (31 mi) long Abasylakh-Seene (Абаасылаах-Сээнэ) on the left.

[2][5][1] The Uryung-Ulakh is one of the sites providing a breeding place for the Siberian crane, a critically endangered species.