The Alakit (Russian: Алакит) is a river in Yakutia (Sakha Republic), Russia. It is a tributary of the Olenyok with a length of 232 kilometres (144 mi) and a drainage basin area of 11,800 square kilometres (4,600 sq mi).
The river flows across a desolate area of Mirninsky and Olenyoksky districts. Currently there are no settlements, but a small village named Alakit was located by the river in its upper course, a little upstream of the mouth of the Yuyose-Delingde, a left tributary.