| Abbreviation | Definition |
|---|---|
| AIN | Aviation International News |
| AINN | American Independent News Network |
| AITN | ASEAN Investment Tax News |
| AJNP | Advanced Journalism Newspaper Production |
| AJPA | American Jewish Press Association |
| ALF | Alien Life Form |
| ALPIN | Austrian Language Polarity In News |
| ALPINE | Alternatively Licensed Program for Internet News and Email |
| ALPINE | Apache Licensed Program for Internet News and Email |
| AM | Amplitude Modulation |
| AMAC | Alternative Media Access Center |
| AMERG | Annenberg Media Exposure Research Group |
| AMF | Advanced Media Framework |
| AMI | Accessible Media Inc. |
| AMN | Al Masdar News |
| AMOD | Adobe Media Orchestration Document |
| AMR | Antibody Mediated Rejection |
| AMS | American Meteorological Society |
| AMWD | America's Most Wanted Deadbeats |
| ANA | African News Agency |