Kyakhtinsky District (Russian: Кя́хтинский райо́н, Russian pronunciation: [ˈkʲæxtʲɪnskʲɪj rəˈjon]; Buryat: Хяагтын аймаг, romanized: Khiaagtyn aimag) is an administrative[1] and municipal[5] district (raion), one of the twenty-one in the Republic of Buryatia, Russia.

The area of the district is 4,684 square kilometers (1,809 sq mi).

[3] The district is located in southern Buryatia, near the Mongolia–Russia border, in the geographical region of the Selenga Highlands.

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

[1] It is divided into one town (an administrative division with the administrative center in the town (an inhabited locality) of Kyakhta), one urban-type settlement (an administrative division with the administrative center in the urban-type settlement (inhabited locality) of Naushki), eight selsoviets, and five somons, all of which comprise forty rural localities.