| Abbreviation | Definition |
|---|---|
| APA | Auto Port Aggregation |
| APA | Automated Password Agent |
| APA | Automobile Protection Association |
| APA | Auxillary Personal Attack |
| APA | Azirian Phonetic Alphabet |
| APA | The Acolyte Protection Agency |
| APA | The Acolytes Protection Agency |
| APAAC | Arizona Prosecuting Attorneys Advisory Council |
| APAAC | Arizona Prosecuting Attorneys' Advisory Council |
| APAAC | Asian Pacific American Affairs Commission |
| APAAC | Asian Pacific American Awareness Coalition |
| APAAS | Application Platform And A Service |
| APAAS | Application Platform as a Service |
| APAB | Aliansi Pelangi Antar Bangsa |
| APAB | All People Accessible Business |
| APAB | All Priests Are Bastards |
| APAB | Animal Penis Activity Book |
| APAB | Assigned Pedophile At Birth |
| APAB | Associação Portuguesa de Análise Bioenergética |
| APAB | Association of Professional Architects of Belize |