Nizhneomsky District (Russian: Нижнео́мский райо́н) is an administrative[1] and municipal[4] district (raion), one of the thirty-two in Omsk Oblast, Russia.

It is located in the east of the oblast.

The area of the district is 3,400 square kilometers (1,300 sq mi).

[citation needed] Its administrative center is the rural locality (a selo) of Nizhnyaya Omka.

[7] The population of the administrative center accounts for 30.5% of the district's total population.