Sir Michael Sanigear Williams, KCMG (17 August 1911 – 25 February 1984) was a British diplomat.
Michael Williams was educated at Rugby School and Trinity College, Cambridge.
He entered the Foreign Office in 1935 and served in the British embassies at Madrid, Rome, and Rio de Janeiro besides posts in London.
Williams was appointed CMG in 1954 and knighted KCMG in 1968.
WILLIAMS, Sir Michael (Sanigear), Who Was Who, A & C Black, 1920–2008; online edn, Oxford University Press, Dec 2007, accessed 18 Feb 2012