Gaston Raynaud (14 April 1850, Paris – 28 July 1911, Boulogne-Billancourt, Hauts-de-Seine, France) was a French philologist, specializing in information and documentation sciences. As a palaeographer archivist, he was librarian of Manuscrits at the Bibliothèque nationale de France and director of the Société des anciens textes français.