達達尼爾海峽(Dardanelles Strait),土耳其称恰纳卡莱海峡(Çanakkale Boğazı),希腊语称Δαρδανελλια,古称赫勒斯滂(Hellespont),是连接马尔马拉海和爱琴海的海峡,属土耳其内海,也是亚洲和欧洲的分界线之一,常与马尔马拉海和博斯普鲁斯海峡并称土耳其海峡。
الدردنيل | Дарданели | Dardaneli | Dardanels | Dardanellerne | Dardanellen | Δαρδανέλια | Dardanelles | Dardaneloj | Dardanelos | Dardanellid | Dardanellit | Dardanelles | Dardanelos | דרדנלים | Dardanelli | ダーダネルス海峡 | დარდანელის სრუტე | 다르다넬스 해협 | Dardanellen | Dardanelai | Dardanellen | Dardanellene | Dardanele | Dardanelos | Dardanele | Дарданеллы | Dardanely | Dardanele | Дарданели | Dardanellerna | Çanakkale Boğazı | Дарданели