| Abbreviation | Definition |
|---|---|
| APG | Stowarzyszenie Geomorfologw Polskich |
| APGO | Association of Professors of Gynecology and Obstetrics |
| APH | Academia Portuguesa da História |
| APH | Academia Portuguesa da Histria |
| APH | Portuguese Academy of History |
| APhA | American Pharmacists Association |
| APHAR | Austrian Pharmacological Society |
| APHAR | Österreichische Pharmakologische Gesellschaft |
| APHAR | sterreichische Pharmakologische Gesellschaft |
| APhC | Association des Pharmaciens du Canada |
| APhC | Canadian Pharmacists Association |
| APHS | Asia Pacific Hernia Society |
| API | Associação Portuguesa de Informática |
| API | Associao Portuguesa de Informtica |
| API | Australian Property Institute |
| API | Portuguese Association of Informatics |
| APICS | American Production Inventory Control Society |
| APIEE | Associação Portuguesa dos Industriais de Engenharia Eléctrica |
| APIEE | Associao Portuguesa dos Industriais de Engenharia Elctrica |
| APIEE | Portuguese Association for the Electrical Engineering Industries |