Countries Bordering the Caspian Sea, Black Sea, and Mediterranean Sea

Three major bodies of water border the Middle East, Europe, and Asia. Here's a comprehensive breakdown of the nations sharing each coastline.

Caspian Sea (5 Countries)

The world's largest inland body of water, bordered exclusively by:

• Azerbaijan
• Iran
• Kazakhstan
• Russia
• Turkmenistan

Note: The Caspian is a lake (endorheic basin), not a sea, but historically called a sea due to its size and salinity.

Black Sea (6 Countries)

Connecting to the Mediterranean via the Turkish Straits (Bosporus, Sea of Marmara, Dardanelles):

• Bulgaria
• Georgia
• Romania
• Russia
• Turkey
• Ukraine

Mediterranean Sea (21 Countries + Territories)

The Mediterranean touches three continents. Sovereign nations with coastlines:

Europe (11)

• Albania
• Bosnia and Herzegovina (tiny coastline at Neum)
• Croatia
• Cyprus (island nation)
• France
• Greece
• Italy
• Malta (island nation)
• Monaco
• Montenegro
• Slovenia (tiny coastline)
• Spain

Asia/Levant (5)

• Israel
• Lebanon
• Syria
• Turkey (also Black Sea)
• Palestine (Gaza Strip coastline)

Africa (5)

• Algeria
• Egypt (also Red Sea)
• Libya
• Morocco (also Atlantic)
• Tunisia

Key Overlaps

• Russia: Borders both Caspian and Black Seas
• Turkey: Borders both Black and Mediterranean Seas (controls the straits connecting them)
• Egypt: Mediterranean and Red Sea (via Suez Canal)

Geopolitical Significance

These waters are critical for energy transport (Caspian oil/gas), grain exports (Black Sea), global trade (Mediterranean), and naval strategy. The Montreux Convention governs Turkish Straits passage, making Turkey the gatekeeper between Black and Mediterranean Seas.