Camille Ferdinand Dreyfus (5 May 1849 - 15 July 1915) was a French lawyer, historian and philanthropist who became Senator for Seine-et-Oise from 1909 to 1915.

On 14 March 1880 he was elected to parliament in a by-election as deputy for the arrondissement of Rambouillet, taking his seat on the left.

[1] Dreyfus had a large fortune, and owned a townhouse at 98 avenue de Villiers in Paris as well as a chateau and farm property in Fontenay-lès-Briis, Essonne.

He was also a historian, author of various historical works and studies, including Vauban économiste and La Rochefoucauld-Liancourt, both of which won awards.

[3] He engaged in discussions, often as reporter, on subjects such as worker's pensions, mutual insurance, aid to large families and juvenile courts.