Abyysky District (; ) is an administrative and municipal district (
raion, or
ulus), one of the
thirty-four in the
Sakha Republic,
Russia. It is located in the north of the republic around the
Indigirka River and borders with
Allaikhovsky District in the north,
Srednekolymsky District in the east,
Verkhnekolymsky District in the southeast,
Momsky District in the south, and with
Ust-Yansky District in the west. The area of the district is . Its
administrative center is the
urban locality (an
urban-type settlement) of
Belaya Gora. As of the
2010 Census, the total population of the district was 4,425, with the population of Belaya Gora accounting for 50.7% of that number.