Major Ernst Grahame Joy (2 November 1888 – 21 June 1993) was an American-born Canadian who became a flying ace during the First World War, credited with eight aerial victories.
He had set aside his law studies and family obligations to join the Canadian Expeditionary Force, then transferred to the Royal Flying Corps.
While he left military service after World War I to practice law, he would return to the colours for World War II.