Baron Moyne, of Bury St Edmunds in the County of Suffolk, is a title in the Peerage of the United Kingdom. It was created in 1932 for the Conservative politician the Hon. Walter Guinness. A member of the prominent Guinness brewing family, he was the third son of Edward Guinness, 1st Earl of Iveagh, third son of Sir Benjamin Guinness, 1st Baronet, of Ashford. His son, the second Baron, was a poet and novelist, and the first husband of Diana Mitford, one of the famous Mitford sisters. As of 2014[update] the title is held by their eldest son, the third Baron, who succeeded in 1992. As a male agnatic descendant of both the first Earl of Iveagh and the first Guinness Baronet of Ashford, he is also in remainder to these two titles.
Barons Moyne (1932)
- Walter Edward Guinness, 1st Baron Moyne (1880–1944)
- Bryan Walter Guinness, 2nd Baron Moyne (1905–1992)
- Jonathan Bryan Guinness, 3rd Baron Moyne (b. 1930)
The heir apparent is the present holder's second but eldest surviving son Hon. Valentine Guy Bryan Guinness (b. 1959).
The heir apparent's heir presumptive is his half-brother Hon. Sebastian Walter Denis Guinness (b. 1964).