Viscount Melville, of Melville in the County of Edinburgh, is a title in the Peerage of the United Kingdom. It was created in 1802 for the notable lawyer and politician Henry Dundas. He was made Baron Dunira, in the County of Perth, at the same time, also in the Peerage of the United Kingdom. Dundas, who was the fourth son of Robert Dundas, of Arniston, the elder, declined an earldom in 1809. He was succeeded by his son, the second Viscount, who was also a noted politician. He assumed for himself the additional surname of Saunders, which was that of his father-in-law. His son, the third Viscount, was a General in the British Army. His nephew, the sixth Viscount, was a diplomat. As of 2011[update] the titles are held by the latter's great-great-grandson, the tenth Viscount, who succeeded his father in 2011.
The family seat is Wey House, near Norton Fitzwarren in Somerset.