The Earldom of Iveagh was created in 1919 in the Peerage of the United Kingdom. The recipient, Edward Guinness, had previously been created Viscount Iveagh in 1905 and Baron Iveagh in 1891. The Earl holds those two titles, as well as the Viscountcy of Elveden, created in 1919. The Earl is also a Baronet.

Earls of Iveagh (1921)

• Edward Cecil Guinness, 1st Earl of Iveagh (1847-1927)
• Rupert Edward Cecil Lee Guinness, 2nd Earl of Iveagh (1874-1967)
• Arthur Francis Benjamin Guinness, 3rd Earl of Iveagh (1937-1992)
• Arthur Edward Rory Guinness, 4th Earl of Iveagh (b. 1969)