| Abbreviation | Definition |
|---|---|
| APCIMS | Association For Private Client Investment Managers And Stockbrokers |
| APCIMS | Association Of Private Clients Investment Managers And Stockbrokers |
| APCO | Association of Police Communications Officers |
| APCR | Academy of Physicians in Clinical Research |
| APCR | Association of Program Coordinators in Radiology |
| APDA | All Pakistan Danger Association |
| APECS | Association of Polar Early Career Scientists |
| APEG | Association of Professional Engineers and Geoscientists |
| APEG | Australasian Paediatric Endocrine Group |
| APEGA | Association of Professional Engineers and Geoscientists of Alberta |
| APEGBC | Association of Professional Engineers and Geoscientists of British Columbia |
| APEGNB | Association of Professional Engineers and Geoscientists of New Brunswick |
| APEL | Associated Professional Educators of Louisiana |
| APEMA | Auger and Power Equipment Manufacturers Association |
| APESMA | Association of Professional Engineers, Scientists and Managers Australia |
| APET | Association For Public Economic Theory |
| APFA | American Pipe Fittings Association |
| APH | Association of Personal Historians, Inc. |
| APhA | American Pharmaceutical Association |
| APHA | American Public Health Association |