Oktyabrsky District (Russian: Октя́брьский райо́н) is an administrative[1] and municipal[4] district, (raion), one of the forty-three in Rostov Oblast, Russia.

It is located in the western central part of the oblast.

The area of the district is 1,998.7 square kilometers (771.7 sq mi).

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

[7] The population of Kamenolomni accounts for 15.4% of the district's total population.