The Eyekit (Russian: Эекит, Yakut: Эйэкит) is a river in the Sakha Republic (Yakutia), Russia.

In its upper course it flows southeast, then it reaches a floodplain with small lakes and swamps and turns northeast.

After being joined by the Tas-Eyekit from the left, it flows roughly eastwards cutting across the southern end of the Chekanovsky Ridge, north of a large bend of the Lena.

Finally it meets the left bank of the great river a little north of Kyusyur, 183 kilometres (114 mi) upstream of its mouth in the Laptev Sea.

[5] The longest tributary of the Eyekit is the 155 km (96 mi) long Tas-Eyekit (Тас-Эекит), joining it from the left.