| Abbreviation | Definition |
|---|---|
| APHC | Association of Plumbing and Heating Contractors |
| APHE | Association for Photography in Higher Education |
| APHL | Association of Public Health Laboratories |
| APHP | Association for Professional Hypnosis and Psychotherapy |
| APHP | Association of Pre Health Professionals |
| API | Association for Pathology Informatics |
| API | Association of British Insurers |
| APIA | Aleut Pribilof Islands Association |
| APIA | Aleutian Pribilof Island Association |
| APIA | Aleutian Pribilof Islands Association |
| APIA | Application Program Interface Association |
| APIA | Asian Pacific Islander Association |
| APIC | Association for Professionals in Infection Control |
| APICE | Association for Professionals in Infection Control Epidemiology |
| APID | Association of Professional Interior Designers |
| APIL | Association for Public |
| APIL | Association for Public Interest Law |
| APIL | Association of Pacific Island Legislatures |
| APIL | Association of Person Injury Lawyers |
| APIL | Association of Personal Injury Lawyers |