| AANS | Afroasian News Service (skr.) |
|---|---|
| AAS | Aging and Adult Services |
| AAS | Airport Advisory Service |
| AAS | Alliance of AIDS Services (skr.) |
| AAS | American Auto Service |
| ABS | Alternative Billing Service |
| ABS | American Breeders Services |
| ABS | Army Broadcasting Service |
| ACS | Academic Computing Services |
| ACS | Army Community Service |