Dagestan, officially the Republic of Dagestan, is a republic of Russia situated in the North Caucasus of Eastern Europe, along the Caspian Sea. It is located north of the Greater Caucasus, and is a part of the North Caucasian Federal District. The republic is the southernmost tip of Russia, sharing land borders with the countries of Azerbaijan and Georgia to the south and southwest, the Russian republics of Chechnya and Kalmykia to the west and north, and with Stavropol Krai to the northwest. Makhachkala is the republic's capital and largest city; other major cities are Derbent, Kizlyar, Izberbash, Kaspiysk, and Buynaksk.

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.