Radix
Charles Joseph Gravier (4 March 1865, in Orléans – 15 November 1937, in Paris) was a French zoologist.
He initially taught classes at École normale (1883–85) in Orléans and at the École normale supérieure de Saint-Cloud, afterwards becoming a professor of natural history at the École normale (1887) in Grenoble. In 1893 he obtained his aggregation of natural sciences and in 1896 his PhD in sciences. Later he became first assistant to Edmond Perrier (1844–1921) at the Muséum national d'histoire naturelle in Paris, where from 1903 he served as an assistant to Louis Joubin (1861–1935). In 1917 he attained the chair of zoology (worms and crustaceans) at the museum.
Gravier is known for his research of Anthozoa (class containing sea anemones and corals). The genera Gravieria, Gravierella and Gravieropsammia are named after him, as are numerous marine species, including the Red Sea mimic blenny (Ecsenius gravieri).In 1923 he was made a chevalier of the Légion d'honneur and commander on 6 August 1937.