Tsimlyansky District (Russian: Цимля́нский райо́н) is an administrative[1] and municipal[4] district (raion), one of the forty-three in Rostov Oblast, Russia.

It is located in the east of the oblast.

The area of the district is 2,529 square kilometers (976 sq mi).

[2] Its administrative center is the town of Tsimlyansk.

[7] The population of Tsimlyansk accounts for 43.9% of the district's total population.