Cloutier is a French occupational name for a nailer, i.e. someone who made and sold nails, from an agent derivative of clou (Latin clavus) for "nail".
As a surname it may refer to:
Alexandre Cloutier (born 1977), Canadian politicianClaude Cloutier (born 1957), a Quebec film animator and graphic novel artistDan Cloutier (born 1976), Canadian ice hockey playerGilles Cloutier (1928–2014), Canadian scientistGary Cloutier (born 1962), American politicianGuy Cloutier (born 1940), Canadian producer, convicted sex offenderGuylaine Cloutier (born 1969), Canadian international swimmerJacques Cloutier (born 1960), Canadian ice hockey playerJeremiah Cloutier, fictional character in the TV series OzKim Cloutier (born 1987), Canadian modelPatrick Cloutier (born 1970), a Canadian soldier who became famous during the 1990 Oka CrisisRéal Cloutier (born 1956), Canadian ice hockey playerT. J. Cloutier (born 1939), American professional poker playerSheila Watt-Cloutier (born 1953), Canadian Inuit activistSuzanne Cloutier (1927–2003), Canadian film actressVéronique Cloutier (born 1974), French Canadian TV and radio personalityZacharie Cloutier (c.1590–1677), one of the founders of Beauport, Quebec.Cloutier may also refer to:
Cloutier (style agency), American styling agencySt-Alphonse/Lac Cloutier Water Aerodrome, Quebec, Canada