Olivier is the French form of Oliver. It may refer to:
As a surname:
- Guillaume-Antoine Olivier (1756–1814), a French entomologist
- George Olivier, count of Wallis (1671–1743), Austrian field marshal
- The Olivier brothers René, Aimé, and Marius, French pioneering bicycle manufacturers
- Herbert Arnould Olivier (1861–1952), an English artist
- Laurence Olivier (1907–1989), an English actor
- Hon. Noël Olivier, daughter of Sydney Haldane Olivier, friend of Rupert Brooke
- Sidney Olivier (cricketer) (1870–1932), English cricketer
- Sydney Haldane Olivier, 1st Baron Olivier KCMG, CB, PC
- Wynand Olivier (born 1983), a South African rugby union player
In fiction:
- Oliver (paladin), (or Olivier) a character in the French epic The Song of Roland
- Olivier (novel), the first published novel by French author Claire de Duras
- Olivier, a demon described in Sebastien Michaelis' classification of demons
- Olivier (comics), a demonic villain and enemy of the Punisher in Marvel Comics
- Olivier Armstrong, a character in Fullmetal Alchemist
- Olivier, MME, a French scientist surpassing Marie Curie in a Hercule Poirot mystery The Big Four (novel)
Other:
- Château Olivier, a Bordeaux winery
- Laurence Olivier Award, theatrical award named after the actor
- Olivier Deschacht, (b.1981) Belgian footballer
- Olivier, a demon described in Sebastien Michaelis' classification of demons
- Olivier salad, a popular dish of Russian cuisine
- The Olivier Theatre (named after the actor), one of three auditoria at the Royal National Theatre