Mariinsky District (Russian: Марии́нский райо́н) is an administrative district (raion), one of the nineteen in Kemerovo Oblast, Russia.

The area of the district is 5,607 square kilometers (2,165 sq mi).

[7] Within the framework of administrative divisions, Mariinsky District is one of the nineteen in the oblast.

[1] The town of Mariinsk serves as its administrative center, despite being incorporated separately as a town under oblast jurisdiction—an administrative unit with the status equal to that of the districts.

[1] As a municipal division, the district is incorporated as Mariinsky Municipal District, with Mariinsk Town Under Oblast Jurisdiction being incorporated within it as Mariinskoye Urban Settlement.