Criticism of Canadian literature has focused on nationalistic and regional themes. Critics against such thematic criticism in Canadian literature, such as Frank Davey, have argued that a focus on theme diminishes the appreciation of complexity of the literature produced in the country, and creates the impression that Canadian literature is sociologically-oriented.
While Canadian literature, like the literature of every nation state, is influenced by its socio-political contexts, Canadian writers have produced a variety of genres. Influences on Canadian writers are broad, both geographically and historically.
Canada's dominant cultures were originally British and French, as well as aboriginal. After Prime Minister Trudeau's "Announcement of Implementation of Policy of Multiculturalism within Bilingual Framework," in 1971, Canada gradually became home to a more diverse population of readers and writers. The country's literature has been strongly influenced by international immigration, particularly in recent decades.
Canadian literature collectively is often called CanLit or Canlit.
Because of its size and breadth, Canadian literature is often divided into sub-categories.
It was the rise of Quebec patriotism and the 1837 Lower Canada Rebellion, in addition to a modern system of primary school education, which led to the rise of French-Canadian fiction. L'influence d'un livre by Philippe-Ignace-Francois Aubert de Gaspé is widely regarded as the first French-Canadian novel. The genres which first became popular were the rural novel and the historical novel. French authors were influential, especially authors like Balzac.
In 1866, Father Henri-Raymond Casgrain became one of Quebec's first literary theorists. He argued that literature's goal should be to project an image of proper Catholic morality. However, a few authors like Louis-Honoré Fréchette and Arthur Buies broke the conventions to write more interesting works.
This pattern continued until the 1930s with a new group of authors educated at the Université Laval and the Université de Montréal. Novels with psychological and sociological foundations became the norm. Authors such as Gabrielle Roy and Anne Hébert, for the first time, began to earn international acclaim. During this period, Quebec theatre, which had previously been melodramas and comedies, became far more involved.
French-Canadian literature began to greatly expand with the turmoil of the Second World War, the beginnings of industrialization in the 1950s, and most especially the Quiet Revolution in the 1960s. French-Canadian literature also began to attract a great deal of attention globally, with Acadian novelist Antonine Maillet winning the Prix Goncourt. An experimental branch of Québécois literature also developed; for instance the poet Nicole Brossard wrote in a formalist style. In 1979, Roch Carrier wrote the story The Hockey Sweater, which highlighted the cultural and social tensions between English and French speaking Canada.
See also: List of Quebec writers, Literature of Quebec, List of French Canadian writers from outside Quebec
Following World War II, writers such as Mavis Gallant, Mordecai Richler, Norman Levine, Margaret Laurence and Irving Layton brought a Modernist influence to Canadian Literature that had been previously missing. This influence, at first, was not broadly appreciated. Norman Levine's Canada Made Me
, a travelogue that presented a sour interpretation of the country in 1958, for example, was widely rejected.
After 1967, the country's centennial year, the national government increased funding to publishers and numerous small presses began operating throughout the country. 
In the late 1970s, science fiction fan and scholar of Canadian literature Susan Wood helped pioneer the study of feminist science fiction, and (along with immigrant editor Judith Merril) brought new respectability to the study of Canadian science fiction, paving the way for the rise of such phenomena as the French-Canadian science fiction magazine Solaris.
By the 1990s, Canadian literature was viewed as some of the world's best.
Canadian authors have accumulated international awards:
However, one of the earliest "Canadian" writers virtually always included in Canadian literary anthologies is Thomas Chandler Haliburton (1796–1865), who died just two years before Canada's official birth. He is remembered for his comic character, Sam Slick, who appeared in The Clockmaker and other humorous works throughout Haliburton's life.
Arguably, the best-internationally-known living Canadian writer (especially after the recent passing of Canadian greats, Robertson Davies, Mordecai Richler and Timothy Findley) is Margaret Atwood, a prolific novelist, poet, and literary critic.
This group, along with Alice Munro, who has been called the best living writer of short stories in English, were the first to elevate Canadian Literature to the world stage. During the post-war decades only a handful of books of any literary merit were published each year in Canada, and Canadian literature was viewed as an appendage to British and American writing.
Much of what was produced dealt with extremely typical Canadiana such as the outdoors and animals, or events in Canadian history. A reaction against this tradition, poet Leonard Cohen's novel Beautiful Losers (1966), was labelled by one reviewer "the most revolting book ever written in Canada".
Most of what Canadians read was written in the United States or Great Britain. Most of what was studied in Canadian schools and universities was also foreign.
Canadian poet Leonard Cohen is perhaps best known as a folk singer and songwriter, with an international following.
Canadian Author Farley Mowat, best know for his work "Never Cry Wolf", also author of "Lost in the Barrens" (1956), Governor General's Award-winning children's book.

Awards For Children and Young Adult Literature: