| Abbreviation | Definition |
|---|---|
| ABM | Application Briefing Meeting |
| ABPI | Association of the British Pharmaceutical Industry |
| ABRA | American Blood Resource Association |
| AC | Advisory Committee |
| ACB | Accreditation and Certification Branch |
| ACB(CDRH) | Accreditation and Certification Branch (CDRH) |
| ACBSA | Advisory Committee on Blood Safety and Availability |
| ACC | RCHSA (Radiation Control for Health and Safety Act) ACCession number |
| ACCME | Accreditation Council for Continuing Medical Education |
| ACCP | American College of Clinical Pharmacology |
| ACDP | Australian Centre for Disease Preparedness |
| ACE | Adverse Clinical Event |
| ACE | Automated Commercial Environment |
| ACEC | Autism Centers of Excellence Program (NIH) |
| ACEP | American College of Emergency Physicians |
| ACG | American College of Gastroenterology |
| ACGME | Accreditation Council for Graduate Medical Education |
| ACIL | American Council of Independent Laboratories |
| ACIP | Advisory Committee on Immunization Practices |
| ACLA | American Clinical Laboratory Association |