Nukutsky District (Russian: Нукутский райо́н; Buryat: Нγхэдэй аймаг, Nükhedei aimag) is an administrative district of Ust-Orda Buryat Okrug of Irkutsk Oblast, Russia, one of the thirty-three in the oblast.

[6] It is located in the south of the oblast.

The area of the district is 2,400 square kilometers (930 sq mi).

[3] Its administrative center is the rural locality (a settlement) of Novonukutsky.

[10] The population of Novo-Nukutsky accounts for 21.8% of the district's total population.