
Herbert Marshall McLuhan was a Canadian philosopher, whose work is among the cornerstones of the study of media theory. Born in Edmonton, Alberta, McLuhan studied at the University of Manitoba and the University of Cambridge. He began his teaching career as a professor of English at several universities in the US and Canada before moving to the University of Toronto in 1946, where he remained for the rest of his life.

Marshall McLuhan is a biography written by Canadian author Douglas Coupland as a part of Penguin Canada's Extraordinary Canadians series. It was published in March 2011 in the US by Atlas & Company under the title, "Marshall McLuhan: You Know Nothing of my Work!". The American edition omits the preface describing the Extraordinary Canadians series by John Ralston Saul.

Marshall McLuhan Catholic Secondary School is a coeducational, non-semestered, Catholic high school in midtown Toronto, Ontario, Canada managed by the Toronto Catholic District School Board. The school was formally founded in September 1998 to replace De La Salle College Oaklands campus, founded by the De La Salle Brothers in 1851, which was reverted as a private school in 1994. The school property was originally built for the Toronto Hunt Club and later used by the Canadian Armed Forces as the Canadian Forces Staff School until 1994.

Eric McLuhan was a communications theorist and media ecologist, son of Marshall McLuhan.

"The medium is the message" is a phrase coined by the Canadian communication theorist Marshall McLuhan and introduced in his Understanding Media: The Extensions of Man, published in 1964. McLuhan proposes that a communication medium itself, not the messages it carries, should be the primary focus of study. He showed that artifacts as media affect any society by their characteristics, or content.

Marshall McLuhan's tetrad of media effects. uses a tetrad to examine the effects on society of any technology/medium by dividing its effects into four categories and displaying them simultaneously. The tetrad first appeared in print in McLuhan's posthumously-published works Laws of Media (1988) and The Global Village (1989),
