The Dardanelles ( DAR-də-NELZ; Turkish: Çanakkale Boğazı, lit. 'Strait of Çanakkale'; Greek: Δαρδανέλλια, romanized: Dardanéllia), also known as the Strait of Gallipoli (after the Gallipoli peninsula), is a narrow, natural strait and internationally significant waterway in northwestern Turkey that forms part of the continental boundary between Asia and Europe and separates Asian Turkey from European Turkey. Together with the Bosporus, the Dardanelles forms the Turkish Straits.
One of the world's narrowest straits used for international navigation, the Dardanelles connects the Sea of Marmara with the Aegean and Mediterranean seas while also allowing passage to the Black Sea by extension via the Bosporus.