Radishchevsky District (Russian: Ради́щевский райо́н) is an administrative[1] and municipal[5] district (raion), one of the twenty-one in Ulyanovsk Oblast, Russia.

It is located in the south of the oblast.

The area of the district is 1,637 square kilometers (632 sq mi).

[2] Its administrative center is the urban locality (a work settlement) of Radishchevo.

[8] The population of Radishchevo accounts for 32.2% of the district's total population.