Olenyoksky 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 west of the republic and borders with
Anabarsky District in the north,
Bulunsky and
Zhigansky Districts in the east,
Vilyuysky,
Verkhnevilyuysky, and
Nyurbinsky Districts in the southeast,
Mirninsky District in the south and southwest, and with
Krasnoyarsk Krai in the west and northwest. The area of the district is . Its
administrative center is the
rural locality (a
selo) of
Olenyok. Population: 4,091 (
2002 Census); The population of Olenyok accounts for 55.1% of the district's total population.