	Glanville Llewelyn Williams (15 February 1911 – 10 April 1997) was a Welsh legal scholar who was the Rouse Ball Professor of English Law at the University of Cambridge from 1968 to 1978 and the Quain Professor of Jurisprudence at University College, London, from 1945 to 1955. He has been described as Britain's foremost scholar of criminal law.