The École nationale supérieure des sciences de l'information et des bibliothèques (ENSSIB; French for National Superior School of Information Science and Libraries) is a French grande école based in Villeurbanne, near Lyon.

[1] Enssib's predecessor, the École nationale supérieure de bibliothécaires, was established by decree in 1963 as an Établissement public à caractère administratif.

[2] The contemporary Enssib was formed by later decree in 1992, with elevated status as a grand établissement.

[1] It provides education and training for library curators and librarians in the French civil service after a competitive examination.

The school is also a member of the University of Lyon and grants a variety of master's degrees, open to those not in the civil service.