David Lindesay-Bethune, 15th Earl of Lindsay (9 February 1926 – 1989), styled Viscount Garnock between 1943 and 1985, was a British soldier. Lindsay was the son of William Tucker Lindesay-Bethune, 14th Earl of Lindsay and Marjory Cross, daughter of Arthur John Graham Cross. He was educated at Eton and Magdalene College, Cambridge. He served in the Scots Guards as a junior officer and left with the rank of Major in 1951.