Bulunsky 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 and borders
Ust-Yansky District in the east,
Verkhoyansky District in the southeast,
Eveno-Bytantaysky and
Zhigansky Districts in the south,
Olenyoksky District in the west, and
Anabarsky District in the northwest. The area of the district is . Its
administrative center is the
urban locality (a
settlement) of
Tiksi. As of the
2010 Census, the total population of the district was 9,054, with the population of Tiksi accounting for 55.9% of that number.