John George MacKay (November 6, 1893 – October 21, 1974[1]) was a farmer and political figure on Prince Edward Island.
He was born in Albany, Prince Edward Island, the son of David MacKay and Almira Harvey, and was educated there.
MacKay served in the 10th Siege Battery with the Canadian Expeditionary Force during World War I.
After the war, he continued his military service in the Canadian Militia as a sergeant in The Prince Edward Island Light Horse (now part of The Prince Edward Island Regiment (RCAC)).
[3] MacKay died in office at the Prince Edward Island Hospital in Charlottetown at the age of 80.