Fort Wellington was the name of a short-lived British settlement established in 1827 at Raffles Bay, on the northern side of the Cobourg Peninsula of what is now the Northern Territory of Australia, which was abandoned in 1829. It was the second of a series of four such abortive settlement attempts in Australia's Top End, the first being Fort Dundas (1824–1828) on Melville Island, the third Fort Victoria or Victoria Settlement, at Port Essington (1838–1849) on the Cobourg Peninsula, and the fourth at Escape Cliffs (1864–1867) near the mouth of the Adelaide River.