Sir James Steuart, 3rd Baronet of Goodtrees and eventually 7th Baronet of Coltness; late in life Sir James Steuart Denham, also called Sir James Denham Steuart (/ˈstuːərt, ˈstjuː-/; 21 October 1713, Edinburgh – 26 November 1780, Coltness, Lanarkshire) was a prominent Scottish Jacobite and author of "probably the first systematic treatise written in English about economics" and the first book in English with 'political economy' in the title. He assumed the surname of Denham late in life; he inherited his cousin's baronetcy of Coltness in 1773.
He was the only son of Sir James Steuart, Solicitor General for Scotland under Queen Anne and George I, and was born in Edinburgh. After graduating from the University of Edinburgh he was admitted to the Scottish bar at the age of twenty-four.
He then spent some years on the Continent, and while in Rome entered into relations with the Young Pretender, Charles Edward Stuart. He was in Edinburgh in 1745, and so compromised himself that, after the battle of Culloden, he found it necessary to return to the Continent, where he remained until 1763. It was not until 1771 that he was fully pardoned for any complicity he may have had in the rebellion. He died at his family seat, Coltness, in Lanarkshire.