Atyashevsky District (Russian: Атя́шевский райо́н; Erzya: Отяжбуе, Otäžbuje; Moksha: Атяшевань аймак, Atäševań ajmak) is an administrative[1] and municipal[6] district (raion), one of the twenty-two in the Republic of Mordovia, Russia.

The area of the district is 1,095.8 square kilometers (423.1 sq mi).

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

[4] Within the framework of administrative divisions, Atyashevsky District is one of the twenty-two in the republic.

[1] It is divided into one work settlement (an administrative division with the administrative center in the work settlement (inhabited locality) of Atyashevo), and eighteen selsoviets, all of which comprise fifty-seven rural localities.