The Uel-Siktyakh (Russian: Уэль-Сиктях; Yakut: Юёл-Сииктээх, Yuyol-Siikteex) is a river in the Sakha Republic (Yakutia), Russia.

[1] The river flows north of the Arctic Circle across desolate areas of Bulunsky District.

Towards the end it meanders strongly in a swampy area of the Central Yakutian Lowland dotted with lakes.

[4] The longest tributaries of the Uel-Siktyakh are the Atyrkan and the 43 km (27 mi) long Oymyakon, both from the right.

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