Lyudinovsky District (Russian: Людиновский райо́н) is an administrative[1] and municipal[5] district (raion), one of the twenty-four in Kaluga Oblast, Russia.

It is located in the southwest of the oblast.

The area of the district is 955 square kilometers (369 sq mi).

[3] Its administrative center is the town of Lyudinovo.

[9] The population of Lyudinovo accounts for 71.7% of the district's total population.