| AAB | Anderson Anderson and Brown |
|---|---|
| AAB | Arbejdernes Andels Boligforening |
| AAD | American Academy of Dermatology |
| AAF | American Advertising Federation |
| AAP | Alternate Access Provider |
| ABP | Address Book Provider |
| ABR | Area Border Router |
| ABS | American Breeders Services |
| ABS | odosielateľ (nem.skr.), Absender (skr.) |
| ADL | Airborne Data Loader |