Peter Castle Floud CBE, (1 June 1911 – 22 January 1960) was a British civil servant and official of the United Nations Relief and Rehabilitation Administration, administering missions in Egypt, Iran, and Albania.
The elder son of Sir Francis Floud KCB KCSI, KCMG, DCL, he was born together with twin sister Molly (m. du Sautoy) on 1 June 1911.
He was admitted to the London School of Economics for research in the history of the industrial arts in Britain with special reference to the work of William Morris.
Together with a team of three women, - Barbara Morris, Shirley Bury and Elizabeth Aslin - Peter broke important ground in the study of the history of industrial arts.
Floud was praised as 'that rare kind of scholar who was able to apply to the material culture of his own day his vast store of knowledge and his ability to discriminate'.