Arthur Hill-Trevor, 1st Viscount Dungannon (c. 1694 – 30 January 1771), was an Irish politician. Born Arthur Hill, he adopted the surname Hill-Trevor in 1759. He was the second son of Michael Hill of Hillsborough, M.P. and Privy Councillor, and Anne Trevor. His maternal grandfather was the leading seventeenth-century statesman Sir John Trevor. Arthur's elder brother was Trevor Hill. 1st Viscount Hillsborough, father of the 1st Marquess of Downshire.