| Abbreviation | Definition |
|---|---|
| AEL | Archive Enhanced Library |
| AEVL | African Elephant Vocalization Library |
| AEVL | Ask Eric Virtual Library |
| A-F | Acid-Free |
| AFLR | Access To Flexible Learning Resources |
| AFP | American Family Physician |
| AFPL | Atlanta Fulton Public Library |
| AG | Author's Guide |
| AGL | Advanced Graphics Libraries |
| AgriBiolChem | Agricultural and Biological Chemistry (Tokyo) |
| AGSL | American Geographical Society Library |
| AH | Ancient History |
| AHC | American Heritage Center, Laramie |
| AHSL | Arizona Health Sciences Library |
| AIAD | Acronyms, Initialisms, and Abbreviations Dictionary |
| AILA | American Indian Library Association |
| AILS | Ames Imaging Library System |
| AIN | Asean Information Network |
| AISL | Asynchronous Internet Server Library |
| AISLE | Association of Indiana School Library Educators |