Arnold Cantwell Smith OC CH (January 18, 1915 – February 7, 1994) was a Canadian diplomat.
A talented student, he won a Rhodes Scholarship to Christ Church, Oxford.
In 1975 he was made a member of the Order of the Companions of Honour.
In 1984, he was made an Officer of the Order of Canada for "a long and distinguished diplomatic career".
[3] His published work includes Stitches In Time; the Commonwealth in World Politics.