| Abbreviation | Definition |
|---|---|
| ACMG | American College of Medical Genetics and Genomics |
| ACMP | American College of Medical Physics |
| ACNP | American College of Nuclear Physicians |
| ACNP | American College of Nurse Practitioners |
| ACO | Accountable Care Organizations |
| ACOEM | American College of Occupational and Environmental Medicine |
| ACOG | American College of Obstetricians and Gynecologists |
| ACOI | American College of Osteopathic Internists |
| aCoRE | Association of Centres of Research Excellence |
| ACP | American College of Physicians |
| ACP | American College of Physicians/American Society of Internal Medicine |
| ACPA | Activated Carbon Producers Association |
| ACPA | American Concrete Pavement Association |
| ACPA | American Concrete Pipe Association |
| ACPA | Association of Canadian Port Authorities |
| ACPE | Accreditation Council for Pharmacy Education |
| ACPE | American College of Physician Executives |
| ACPI | Association of Catholic Priests in Ireland |
| ACPM | American College of Preventive Medicine |
| ACPM | American College of Project Managers |