| Abbreviation | Definition |
|---|---|
| FOBL | Friends of the Belmont Library (Belmont, CA) |
| FOBL | Friends of the Oakhurst Branch Library (Oakhurst, CA) |
| FOCL | F The Ontario City Library |
| FOCL | Friends Of Cairns Libraries |
| FOCL | Friends Of Connecticut Libraries |
| FOCL | Friends of CT Libraries |
| FOCL | Friends Of The Central Library |
| FOCL | Friends Of The Chiloquin Library |
| FOCL | Friends Of The College Library |
| FOCL | Friends of the Corrales Library |
| FOCL | Friends Of The Cudahy Library |
| FOCL | Friends of the Otsego County Library |
| FOCUS | Flynn Online Catalog User System |
| FODL | Friends of Deddington Library |
| FODL | Friends of Delaware Libraries |
| FODL | Friends of Drake Library |
| FODL | Friends Of Duarte Library |
| FODL | Friends of the Darby Library |
| FODL | Friends of the Delaware Libraries |
| FODL | Friends of the Dunwoody Library |