Patrick Andrew Wentworth Hope-Johnstone, 11th Earl of Annandale and Hartfell (born 19 April 1941), is a Scottish peer. He succeeded his father as chief of Clan Johnstone in 1983, and his claim to an earldom was recognized three years later. He was a member of the House of Lords from 1986 to 1999.
A member of Lloyd's of London from 1976 until 2004, he has also served as a member of Dumfriesshire County Council and the Dumfries and Galloway Council and as Vice-Lord Lieutenant of Dumfries.