Alexander Leslie-Melville, 7th Earl of Leven (7 November 1749 – 22 February 1820) was a Scottish Whig politician and peer. As the eldest son of David Melville, 6th Earl of Leven, he succeeded his father as Earl of Leven and Earl of Melville on 9 June 1802. Between 1806 and 1807 he sat in the House of Lords as a Scottish representative peer.