| AAC | Air Agency Certificate |
|---|---|
| ADN | Agency Disclosure Notice |
| AEA | Area Education Agency |
| AFO | Agency Field Office (skr.) |
| ANA | Arab News Agency |
| ASA | Army Security Agency (skr.) |
| ASR | Accredited Seller Agency |
| ATA | Albanian Telegraphic Agency |
| BSA | Brazilian Space Agency |
| DDA | Digital Development Agency (skr.) |