Peter William Unwin CMG (born 20 May 1932) is a British writer and retired diplomat.
On 5 February 1955, as part of National Service, Unwin was commissioned into the Intelligence Corps, British Army, as a second lieutenant.[1] On 25 September 1956, he was transferred to the Army Emergency Reserve of Officers.[2] He was promoted to lieutenant on 18 November 1956.[3] On 2 September 1956, Unwin had joined the Foreign Service as an Officer in Branch A.[4]
He was Ambassador to Hungary from 1983 to 1986 and Ambassador to Denmark from 1986 to 1988.[5][6] He served as Deputy Secretary General of the Commonwealth from 1989 to 1993. Having retired from the Diplomatic Service, he is an author and occasional contributor to The Times.[7]