Esmond Unwin Butler, OC, CVO (July 13, 1922 – December 18, 1989) was a Canadian diplomat.
He was Ambassador Extraordinary and Plenipotentiary to Morocco.
Previously, from 1959 to 1985, he was Secretary to the Governor General of Canada.
Born in Wawanesa, Manitoba,[1] he was made an Officer of the Order of Canada in recognition for being "one of the key developers of the Canadian Honours System" in 1986.
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