Tersane Island (, literally Shipyard island) is a Mediterranean island of Turkey.
Administratively, the island is a part of Fethiye ilçe (district) of MuÃÂla Province. It is situated in the Gulf of Fethiye at . It is separated from Domuz Island by a narrow channel to the west. The triangular island has a surface area of about . There are three small bays and the bay at the north west corner is well protected. The northeast part of the bay has a very shallow harbour.
The ancient name of the island was Telandria () and Telandros (). There are ruins from the Lycian era. During the Ottoman Empire age the island was probably a ship building and repair harbor. the population of the island left the island following the Population exchange agreement between Greece and Turkey. Although the island is currently uninhabited there is a restaurant with a quay for the yachters.