Lieutenant-General Sir James Campbell KB (c. 1680 – 11 May 1745) was a British army officer and Whig politician who represented the constituency of Ayrshire in the House of Commons of Great Britain from 1727 to 1741. A distinguished cavalry officer, Campbell began his military career at a young age and fought in several conflicts of the Second Hundred Years' War, along with serving as the governor of Edinburgh Castle from 1738 until his death in 1745.
Born in Lawers, Perthshire into an aristocratic Scottish family, Campbell joined the Scots Army when he was just thirteen years old.