Cellier is a French surname meaning "storeroom". Notable people with the surname include:
Alexandre Cellier (born 1966), Swiss musician, Marcel Cellier's sonAlexandre Eugène Cellier (1883–1968), French organist and composerAlfred Cellier (1844–1891), English composer, orchestrator and conductorAntoinette Cellier (1913–1981), English actressCaroline Cellier, French actressElizabeth Cellier (fl. 1668–1688), English midwifeGermaine Cellier (1909–1976), French perfumerFrançois Cellier (1849–1914), English conductor and composerFrank Cellier (actor) (1884–1948), English actorJérôme Cellier (born 1984), French footballerMarcel Cellier (1925–2013), Swiss organist and musicologistPeter Cellier (born 1928), English actor