Trosnyansky District (Russian: Троснянский райо́н) is an administrative[1] and municipal[4] district (raion), one of the twenty-four in Oryol Oblast, Russia.

It is located in the southwest of the oblast.

The area of the district is 769.7 square kilometers (297.2 sq mi).

[2] Its administrative center is the rural locality (a selo) of Trosna.

[7] The population of Trosna accounts for 24.6% of the district's total population.