| Abbreviation | Definition |
|---|---|
| PIROL | Project Integrating Reference Object Library |
| PL | Public Library |
| PLA | Public Libraries Association |
| PLA | Public Library Association |
| PLAC | Public Library Access Card |
| PLAD | Public Library Appreciation Day |
| PLAN | Panhandle Library Access Network |
| PLAN | Preserving Library Access Now |
| PLANNER | Promotion of Library Automation and Networking in North Eastern Region |
| PLAR | Public Library Annual Report |
| PLBA | Polish Library Building Association |
| PLBL | Pictorial Library of Bible Lands |
| PLCH | Public Library of Cincinnati and Hamilton |
| PLCT | Processes Library Configuration Tool |
| PLD | Public Libraries Division |
| PLD | Public Library Development |
| PLD | Public Library Division |
| PLDBL | Paul Lawrence Dunbar Branch Library |
| PLDL | Portage Lake District Library |
| PLDS | Public Library Data Service |