Robert Dundas, 2nd Viscount Melville, was a British statesman, the son of Henry Dundas, the 1st Viscount. Dundas was the Member of Parliament for Hastings in 1794, Rye in 1796 and Midlothian in 1801. He was also Keeper of the Signet for Scotland from 1800. He was appointed a Privy Counsellor in 1807, a Fellow of the Royal Society in 1817, a Knight of the Thistle in 1821, and was Chancellor of the University of St Andrews from 1814. Melville filled various political offices and was First Lord of the Admiralty from 1812 to 1827 and from 1828 to 1830.

Henry Dundas, 1st Viscount Melville, PC, FRSE, styled as Lord Melville from 1802, was the trusted lieutenant of British prime minister William Pitt and the most powerful politician in Scotland in the late 18th century.