| Abbreviation | Definition |
|---|---|
| AMYLA | Adams Morgan Youth Leadership |
| AMYLA | Adams Morgan Youth Leadership Academy |
| AMZ | Altern Mit Zukunft |
| AMZ | Anti Magic Zone |
| AMZA | American Miniature Zebu Association |
| AN | Abl Negative |
| AN | Absolutely Nowwhere |
| AN | Acid Number |
| AN | Acquired Nystagmus |
| AN | Acrylonitrile AN |
| AN | Added Neutrons |
| AN | Adequate Nutrition |
| AN | Advanced Negative |
| AN | Ai An |
| AN | Aircraft National |
| AN | Akademija Nauk |
| AN | All Natural |
| AN | Almost Nil |
| AN | Alternative National |
| AN | American Names |