| 3W | Vietnam (označenie lietadiel) |
|---|---|
| A META | na polovicu |
| AAB | Associação dos Arquivistas Brasileiros |
| AAC | Academic Advisory Center |
| AACO | AIDS Activities Coordinating Office |
| AAD | Automatic Activation Device |
| AANRUD | nórsky spisovateľ, autor vidieckych poviedok (Hans, 1863-1953) |
| AANS | Afroasian News Service (skr.) |
| AAP | Alternate Access Provider |
| AAS | Aging and Adult Services |