Aldansky 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 south of the republic on the right bank of the
Lena River near the mouth of the
Aldan River and borders with
Khangalassky and
Amginsky Districts in the north,
Ust-Maysky District in the northeast,
Khabarovsk Krai in the east,
Neryungrinsky District in the south, and with
Olyokminsky District in the west and southwest. The area of the district is . Its
administrative center is the
town of
Aldan. As of the
2010 Census, the total population of the district was 42,632, with the population of Aldan accounting for 49.9% of that number.