Okinsky District (Russian: Оки́нский райо́н; Buryat: Ахын аймаг, Akhyn aimag) is an administrative[1] and municipal[4] district (raion), one of the twenty-one in the Republic of Buryatia, Russia.

The area of the district is 26,012 square kilometers (10,043 sq mi).

[2] Within the framework of administrative divisions, Okinsky District is one of the twenty-one in the Republic of Buryatia.

[1] The district is divided into one selsoviet and three somons, which comprise fifteen rural localities.

[4] Its one selsoviet and three somons are incorporated as four rural settlements within the municipal district.