Grosjean is a surname of French origin meaning "one who was a strong or sturdy person".
Grosjean may also refer to:
- Grosjean v. American Press Co., a US Supreme Court case
People with the surname Grosjean:
- Matthew Grosjean, American alpine skiier
- Romain Grosjean, Franco-Swiss racing driver
- Sébastien Grosjean, French tennis player
- James Grosjean, American gambler and author
- Bruno Grosjean, a possible real name for purported Holocaust survivor Binjamin Wilkomirski
- Roger Grosjean (1920–1975), French archeologist especially interested in the prehistory of Corsica
- François Grosjean, psycholinguist and researcher on bilingualism