Sir Roderick Castle Floud FBA (born 1 April 1942) is a British economic historian and a leader in the field of anthropometric history. He has been provost of the London Guildhall University, vice-chancellor and president of the London Metropolitan University, acting dean of the School of Advanced Study at the University of London, and provost of Gresham College (2008–2014). He is the son of Bernard Floud MP.