Aleysky District (Russian: Але́йский райо́н) is an administrative[1] and municipal[4] district (raion), one of the fifty-nine in Altai Krai, Russia.

The area of the district is 3,400 square kilometers (1,300 sq mi).

[7] Within the framework of administrative divisions, Aleysky District is one of the fifty-nine in the krai.

[1] The town of Aleysk serves as its administrative center, despite being incorporated separately as a town of krai significance—an administrative unit with the status equal to that of the districts.

[8] Lakes Sredneye and Bakhmatovskoye are located in the district.