Sir Francis Lewis Castle Floud KCB KCSI KCMG (18 May 1875 – 17 April 1965) was a British civil servant and diplomat.
He was educated at Cranleigh School and King's College London, having refused to go to Oxford University because he did not wish to enter the church; his younger brother went in his stead.
He entered the Board of Agriculture at a junior level in 1894 and, while working there, qualified as a barrister of Lincoln's Inn.
He was chairman of the board of customs and excise from 1927 to 1930 and then permanent secretary of the Ministry of Labour (1930-1934) during the very difficult period following the financial crisis, when unemployment and other benefits were cut by the National government.
[2] From 1938 to 1940 he chaired the Bengal Land Revenue Commission, for which he was appointed a Knight Commander to the Order of the Star of India (KCSI) in the 1941 New Year Honours[3] and, in his retirement, a number of other public bodies.