| Abbreviation | Definition |
|---|---|
| AK | Andrew Kaufmann |
| AKMA | A. K. M. Adam |
| ALP | Anna Livia Plurabelle |
| ALS | Anthony L. Sommers |
| ALW | Andrew Lloyd Webber |
| AM | Arnoldo Mondadori |
| AMG | Alan Merril Gottlieb |
| AMG | Allan M. Goldstein, author |
| ANGIE | Angelina Jolie |
| AO | Alon Oleartchik, musician |
| AOP | Alfred Osborn Pope |
| AP | Angela Parker |
| AP | Anthony Pope, actor |
| AP | Anthony Purcell |
| APJ | Ameenchand Pyarelal Jain |
| AQ | Ahmed Qatamesh |
| AR | Amber Renee |
| ARI | Aristotle |
| ARY | Abdul Razzak Yakub |
| AS | Adolf Schickelgruber |