Novels:
* Barometer Rising (1941): This novel, set in Halifax during the Halifax Explosion, was his debut and earned him critical acclaim.
* Two Solitudes (1945): A powerful novel exploring the cultural divide between English and French Canadians, considered a cornerstone of Canadian literature.
* The Precipice (1948): Set in a small Quebec town, it delves into themes of social change, personal responsibility, and the search for meaning.
* Each Man's Son (1951): This novel follows the journey of a young man seeking to understand his father's legacy in the aftermath of World War II.
* The Watch That Ends the Night (1959): This complex novel explores themes of alienation, the search for identity, and the struggle for meaning in a rapidly changing world.
* Return of the Sphinx (1967): This novel deals with the complexities of contemporary society and the search for individual fulfillment.
* The Other Side of Hugh MacLennan (1977): This novel, written later in his career, offers a poignant reflection on his life and work.
Nonfiction:
* Cross Country (1949): A collection of essays exploring Canadian society and culture.
* Seven Rivers of Canada (1961): A travelogue that celebrates the beauty and diversity of Canada's landscapes.
Awards and Recognition:
MacLennan was a recipient of numerous literary awards, including the Governor General's Award for Fiction, the Prix du Gouverneur général, and the Molson Prize. He is considered one of the most important and influential figures in Canadian literature.