David John Carnegie, 10th Earl of Northesk (1865 – 1921), a Scottish representative peer, was born the son of Lt.-Col. George Carnegie, 9th Earl of Northesk and Elizabeth Georgina Frances Elliot on 1 December 1865. He died on 5 December 1921 at age 56.
He married Elizabeth Boyle Hallowes, daughter of Maj.-Gen. George Skene Hallowes, on 3 February 1894 and had two children: