Nizhnekolymsky District (Russian: Нижнеколы́мский улу́с; Yakut: Аллараа Халыма улууһа, Allaraa Xalıma uluuha) is an administrative[1] and municipal[6] district (raion, or ulus), one of the thirty-four in the Sakha Republic, Russia.

The area of the district is 87,100 square kilometers (33,600 sq mi).

[3] Its administrative center is the urban locality (a settlement) of Chersky.

[4] The district is washed by the East Siberian Sea in the north.

[2] As of the 2021 Census, the ethnic composition was as follows:[11] The economy of the district is mostly based on agriculture and fishing.