Yelkenli Island (, literally "sailboat Island) is a Mediterranean island in Turkey. It is administratively a part of Aydıncık ilçe (district) of Mersin Province at .
The uninhabited island has an area of only . It is almost merged to the mainland (Anatolia) and close to the Aydıncık Cave a famous cave. Aydıncık Islands are about to the west. Yelkenli Island is known as a breeding location of Mediterranean gull and Mediterranean monk seal.Essay by Mustafa Yalçıner
References