Argayashsky District (Russian: Аргая́шский райо́н) is an administrative and municipal district (raion), one of the twenty-seven in Chelyabinsk Oblast, Russia.

The area of the district is 2,791 square kilometers (1,078 sq mi).

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

[3] The district was part of the Bashkir Autonomous Socialist Soviet Republic until 1934, and together with neighboring Kunashaksky District, formed the exclave Argayash Canton.

The two districts were added to Chelyabinsk Oblast as the Argayash National Okrug, which itself only survived until November 1934.