Kuytunsky District (Russian: Куйтунский райо́н) is an administrative district, one of the thirty-three in Irkutsk Oblast, Russia.

[1] Municipally, it is incorporated as Kuytunsky Municipal District.

[7] The area of the district is 11,200 square kilometers (4,300 sq mi).

[3] Its administrative center is the urban locality (a work settlement) of Kuytun.

[10] The population of Kuytun accounts for 31.7% of the district's total population.