Abyysky District (Russian: Абы́йский улу́с; Yakut: Абый улууһа, Abıy uluuha, Yakut pronunciation: [abɯj uluːha]) is an administrative[1] and municipal[6] district (raion, or ulus), one of the thirty-four in the Sakha Republic, Russia.

[2] Its administrative center is the urban locality (an urban-type settlement) of Belaya Gora.

[3] The Indigirka River and its tributary Uyandina, with the Khatyngnakh, are the main watercourses flowing through the district.

The Indigirka is navigable and provides a link to the Kolyma Bay on the East Siberian Sea to the north.

[2] Initially, its administrative center was in the selo of Abyy, but on January 10, 1941 it was moved to Druzhina.