Ewart John Arlington Harnum (October 13, 1910 – February 29, 1996) was a Canadian businessman and the fifth lieutenant governor of Newfoundland from 1969 to 1974. Born on Sound Island in Placentia Bay, Newfoundland, Harnum was educated at Bishop Feild College, St. John's. His business background was in insurance, as he worked for Dale and Company Limited, followed by Bowring Insurance, Mutual Life Insurance of Canada and finally W.U. Knowling Insurance Limited. Harnum then established his own business, Harnum Insurance Agencies. Harnum was very active in the community and served on many boards. Following is a list of his many accomplishments: