Eilean Dubh Mòr () is an uninhabited island in the Inner Hebrides of Scotland. It lies at the mouth of the Firth of Lorn, between the islands of Lunga and Garbh Eileach. The area of the island has been measured variously—at by Livingstone and by Haswell-Smith, the latter including the nearby islet of Eilean Dubh Beag (), which is joined to Eilean Dubh Mòr at low tide.