Novoduginsky District (Russian: Новодугинский райо́н) is an administrative[1] and municipal[3] district (raion), one of the twenty-five in Smolensk Oblast, Russia.

It is located in the northeast of the oblast.

The area of the district is 1,922.04 square kilometers (742.10 sq mi).

[1] Its administrative center is the rural locality (a selo) of Novodugino.

[6] The population of Novodugino accounts for 36.6% of the district's total population.