Kalmykia, officially the Republic of Kalmykia, is a republic of Russia, located in the North Caucasus region of Southern Russia. The republic is part of the Southern Federal District, and borders Dagestan to the south and Stavropol Krai to the southwest; Volgograd Oblast to the northwest and north and Astrakhan Oblast to the north and east; Rostov Oblast to the west and the Caspian Sea to the east. Through the Caspian Depression, the Kuma river forms Kalmykia'a natural border with Dagestan. Kalmykia is the only region in Europe where Buddhism is the predominant religion.

The North Caucasus, or Ciscaucasia, is a region in Western Asia governed by Russia. It constitutes the northern part of the wider Caucasus region, which forms the natural border between Europe and West Asia. It is bordered by the Sea of Azov and Black Sea to the west, the Caspian Sea to the east, and the Caucasus Mountains to the south. The region shares land borders with the South Caucasus countries of Georgia and Azerbaijan. Krasnodar is the largest city within the North Caucasus.