Walter Edward Guinness, 1st Baron Moyne (1880 – 1944) was a politician and traveller. He was the third son of the brewer and philanthropist Edward Cecil Guinness, 1st Earl of Iveagh. He was created Baron Moyne of Bury St Edmunds in 1932.
Following active service in the Second South African War (1899 – 1902), extensive map-making expeditions in Asia Minor and further active military service in World War I, Lord Moyne held a number of government appointments including Minister for Agriculture (1925-1929), financial commissioner to Kenya (1932), chairman of the West Indies royal commission (1938 and 1939), and important positions in government under Winston Churchill during World War II.
While serving as resident minister of state in Egypt in 1944, he was assassinated by members of the Stern gang.