Borders of Azerbaijan
The Borders of Azerbaijan define the land and maritime borders of Azerbaijan. Azerbaijan has international land borders with 5 states.
The neighboring countries are Russia to the north, Georgia to the northwest, Iran to the south, Turkey to the west and Armenia to the west and via the Azerbaijani exclave of Nakhchivan to the north and east. To the east, Azerbaijan is bordered by the Caspian Sea which is classified as the world's largest lake and also as a closed sea.
Additionally, in Armenia, there exist three Azerbaijani enclaves: Barxudarlı, Yuxarı Əskipara and Karki Reciprocally, there exists one Armenian enclave, a village called Artsvashen in north-western Azerbaijan.
Although as a landlocked country, Azerbaijan has no access to the open sea, it has a coastline of 713 km on the Caspian Sea, which is a lake or a closed sea depending on various definitions and interpretations. Because of its large size and being bordered by five countries, it has maritime borders and naval forces by all five Caspian littoral states. Azerbaijan's maritime boundaries with Russia and Kazakhstan have been determined, but is still disputed with Iran and Turkmenistan.Land borders
;Table of countries with a land border with Azerbaijan
.
| # | Country | Length |
| 1 | | 1007 |
| 2 | | 765 |
| 3 | | 480 |
| 4 | | 390 |
| 5 | | 8 |
| Total | 2650 |
