The Turkish Straits (Turkish: Türk Boğazları) are a series of internationally significant waterways in northwestern Turkey that connect the Aegean and Mediterranean seas to the Black Sea.
They consist of the Dardanelles, the Sea of Marmara, and the Bosphorus, all part of the sovereign sea territory of Turkey and subject to the regime of internal waters. They are conventionally considered the boundary between the continents of Europe and Asia, as well as the dividing line between European Turkey and Asian Turkey.
Owing to their strategic importance in international commerce, politics, and warfare, the Turkish Straits have played a significant role in European and world history, and have since been governed in accordance with the 1936 Montreux Convention.
As waterways, the Turkish Straits connect various seas along the Eastern Mediterranean, the Balkans, the Near East, and Western Eurasia. Specifically, the Straits allows maritime connections from the Black Sea all the way to the Aegean and Mediterranean Seas, the Atlantic Ocean via Gibraltar, and the Indian Ocean through the Suez Canal, making them crucial international waterways, in particular for the passage of goods coming in from Russia.