| Abbreviation | Definition |
|---|---|
| ANSCR | The Alpha-Numeric System for Classification of Recordings |
| ANTJ | Antiquaries Journal |
| AOF | Archives de l'Occupation Française |
| AOTL | An Open Texture Library |
| AOWL | Agricultural Online Wage Library |
| APDL | Asia Pacific Design Library |
| APDL | Asia Pacific Digital Library |
| APEL | A Portable EMACS Library |
| APL | Appleton Public Library |
| APL | Austin Public Library |
| APLAC | Alberta Public Library Administrators Council |
| APLD | Antioch Public Library District |
| APLL | Advancing Public Library Leadership |
| APLS | Adams Public Library System |
| APLS | Alabama Public Library Service |
| APLS | Automated Patent Library System |
| APML | Association of Pall Mall Libraries |
| APPL | Autauga Prattville Public Library |
| APPLD | Algonquin Area Public Library District |
| APPLE | All People Promoting Literacy Efforts |