David Charles Carnegie, 4th Duke of Fife is a British peer and businessman. He is the only surviving son of the late James Carnegie, 3rd Duke of Fife, and his former wife Caroline Dewar. He was styled Earl of Macduff until 1992, and then Earl of Southesk until succeeding his father on 22 June 2015 as the fourth Duke of Fife and Chief of the Clan Carnegie. He is the highest person in line of succession to the British throne who is not a descendant of George V. He is a third cousin of King Charles III.

James George Alexander Bannerman Carnegie, 3rd Duke of Fife was a British landowner, farmer and peer. He was the grandson of Louise, Princess Royal, a daughter of King Edward VII and Queen Alexandra. As a female-line great-grandson of a British sovereign, he did not carry out royal or official duties or receive any funds from the Civil List. He was the second cousin of Queen Elizabeth II and Princess Margaret, Countess of Snowdon, and King Harald V of Norway. Through his maternal grandfather, he was also a descendant of William IV and Dorothea Jordan.