The Barbaros Boulevard is a 3.1 km (1.9 mi)-long major street in the Beşiktaş district on the European side of Istanbul, Turkey. It runs in a straight line in south–north direction from Beşiktaş Square over Yıldız up to Zincirlikuyu, where it passes over to Büyükdere Avenue. It is named after the Ottoman admiral of the fleet Hayreddin Barbarossa, whose tomb is located in Beşiktaş.