| Abbreviation | Definition |
|---|---|
| AC | Another Cat |
| AC | Antonio Carlos |
| AC | Aunt Carol |
| AC | Aunt Christina |
| AC | Aunt Cindy |
| AD | Alfred Daniel |
| AD | Aunt Dorothy |
| AD1 | Alpha Domini One |
| ADB | Annoying Dork Boy |
| ADC | Aden Daniel Carl |
| ADD | Another Darn Dog |
| AE | Alfred Elton |
| AF | Alan Frank |
| AF | Alyssa Francine |
| AF | American Fiction |
| AF | Aunt Flo |
| AFR | Abnormal Fluid Rate |
| AG | Albertu Ghraibzales |
| AH | Andy Hilfiger |
| AH | Augustus Hamilton |