Douarnenez, (Breton: douar (land) an enez (the island) or land of the island), is a commune in the Finistère department of Brittany in north-western France.
It lies at the mouth of the Pouldavid estuary on the southern shore of Douarnenez Bay in the Atlantic Ocean, 25 kilometres (16 mi)(15 miles) north-west of Quimper.
The island of Tristan off Douarnenez has a mysterious past, linked as it is to the legend of Tristan and Iseult.