Maryanovsky District (Russian: Марья́новский райо́н) is an administrative[1] and municipal[5] district (raion), one of the thirty-two in Omsk Oblast, Russia.

The area of the district is 1,700 square kilometers (660 sq mi).

[citation needed] Its administrative center is the urban locality (a work settlement) of Maryanovka.

[3] Maryanovsky district is located in the south of the West Siberian Plain.

The Kamyshlov Log runs across the area.