Edgar Wardell McInnis (July 26, 1899 – September 28, 1973) was a Canadian poet and historian, best known for his Oxford Periodical History of the War, a six-volume year-by-year history of World War II, and for Canada: A Political and Social History, which was an important and influential textbook in Canadian history classes in its era. A longtime professor at the University of Toronto and York University, he was a two-time winner of the Governor General's Award for English-language non-fiction, winning for The Unguarded Frontier: A History of American-Canadian Relations at the 1942 Governor General's Awards and for The War: Fourth Year at the 1944 Governor General's Awards.