Fatih is a municipality () and district in Istanbul, Turkey that encompasses the peninsula coinciding with historic Constantinople. In 2009, the district of Eminönü, formerly a separate municipality located at the tip of the peninsula, was merged into Fatih. Fatih borders the Golden Horn to the north and the Sea of Marmara to the south, while the Western border is demarked by the Theodosian wall. The mayor is Mustafa Demir (AKP).