Laurentian (French: Laurentides or Laurentien) may refer to:

• Relation to Saint Lawrence

North America

• Laurentide Ice Sheet, the continental glacier covering much of North America during the Pleistocene Epoch
• Relating to the Saint Lawrence River

Canada

• Laurentia, the craton at the heart of the North American continent
• Canadian Shield, also known as the Laurentian Shield or the Laurentian Plateau.
• Laurentian Divide, also known as the "Northern Divide", a continental divide in North America
• Laurentian Mountains in Quebec
• Laurentian Upland
• Laurentian Abyss or Abyssal – a trench off the eastern coast of Canada
• Laurentides, administrative region in Quebec
• Laurentides Wildlife Reserve, in Quebec
• Saint-Lin–Laurentides, a municipality in Quebec
• Laurentien (Quebec City) (in French: quartier "Notre-Dame-des-Laurentides"), a borough in Quebec City, Quebec
• Laurentian, Ontario, a neighbourhood within Valley East, Ontario

• Laurentian University in Sudbury, Ontario
• Laurentian Bank of Canada
• Laurentian language, a language in the Iroquoian family of languages
• Laurentian French, the variety of the French language spoken in Canada
• Laurentian Codex, a Russian manuscript
• Laurentian library or Biblioteca Medicea Laurenziana of Florence, Italy
• Laurentian (train), operated by the Delaware & Hudson
• Pontiac Laurentian, a Canadian automobile
• Princess Laurentien of the Netherlands, member of the Dutch royal family
• Laurentien (art supplies), a Canadian brand of art supplies
• Laurentian Society, a student society of Trinity College, Dublin University
• Laurentian Consensus, a Canadian political theory

• Laurentia (disambiguation)
• Lawrencian, relating to English writer and poet D. H. Lawrence