| Abbreviation | Definition |
|---|---|
| FCLA | Florida Center for Library Automation |
| FCLS | Fairfield City Library Service |
| FCLS | Fayette County Library System |
| FCLS | Four County Library System |
| FCLS | Franklin County Library System |
| FCML | Fayette County Memorial Library |
| FCML | Free Code Manipulation Library |
| FCPL | Frederick County Public Library |
| FDL | Frederick Douglass Library |
| FDLD | Federal Depository Library Directory |
| FDLP | Federal Depository Library Program |
| FDRL | Forked Deer Regional Library |
| FDRL | Fort Davis Regional Library |
| FDRL | Franklin D Roosevelt Library |
| FDRL | Franklin Delano Roosevelt Library |
| FedProc | Federation Proceedings |
| FERRET | Federal Electronic Research and Review Extraction Tool |
| ff | following |
| ff. | leaves following |
| FFAX | Fairfax County Library, Fairfax, Virginia |