David Lindesay-Bethune, 15th Earl of Lindsay

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.
He was appointed Honorary Colonel on 29 May 1957of the Fife and Forfar Yeomanry/Scottish Horse. He held this post until 1962, when his tenure expired. He was however allowed to retain the honorary rank of Colonel.

Lord Lindsay married the Honourable Mary-Clare Douglas-Scott-Montagu, daughter of John Douglas-Scott-Montagu, 2nd Baron Montagu of Beaulieu and Alice Pearl Crake, on 31 October 1953. They had one son, James, and one daughter, Caroline, but were divorced in 1968. He married as his second wife Penelope Crossley, daughter of Anthony Crossley and Clare Frances Fortescue Thomson, in 1969. He died in 1989 and was succeeded by his only son, James.