Monier may refer to:
- Damien Monier (born 1982), French professional road bicycle racer
- Joseph Monier (1823-1906), one of the principal inventors of reinforced concrete
- Louis Monier (born 1956), founder of Internet search engine AltaVista
- Monier Monier-Williams (1819-1899), British Indologist
- Sébastien Monier (born 1984), French-Mauritian footballer
- Monier Group is a roofing company.