| Abbreviation | Definition |
|---|---|
| CELA | Centre for Equitable Library Access |
| CELIO | Corps of Engineers Library Information Online |
| CELK | Consortium of Electronic Libraries in Kosova |
| CEMA | California Ethnic and Multicultural Archives |
| CENL | Conference of European National Libraries |
| CERIF | Common European Research Information Format |
| CERL | Carl Elliott Regional Library |
| CF | Correction Factor |
| CF | correction factor (for LC data) |
| CFL | Council of Federal Libraries |
| CFLA | Canadian Federation of Library Associations |
| CFOL | Chico Friends of the Library |
| CFPL | Cedar Falls Public Library |
| CFR | Code of Federal Regulations |
| CFSL | Computers for Schools and Libraries |
| CGAL | Computational Geometry Algoritms Library |
| CGAL | Computational Geometry and Algorithms Library |
| CGL | Cut Generation Library |
| CGLC | Coastal Georgia Library Collaborative |
| CGLP | Coptic Gnostic Library Project |