| Abbreviation | Definition |
|---|---|
| ABMDR | American Bone Marrow Donor Registry |
| ABMDR | Armenian Bone Marrow Donor Registry |
| ABMDR | Athens Bone Marrow Donor Registry |
| ABMDR | Australian Bone Marrow Donor Registry |
| ABME | American Board of Medical Examiners |
| ABMG | American Board of Medical Genetics |
| ABMS | American Board of Medical Specialties |
| ABNM | American Board of Nuclear Medicine |
| ABNS | American Board of Neurological Surgery |
| ABO | American Board of Ophthalmology |
| ABO | American Board of Otolaryngology |
| ABOG | American Board of Obstetrics and Gynecology |
| ABOS | American Board of Orthopaedic Surgery |
| ABOTO | American Board of Otology |
| ABP | American Board of Pathology |
| ABP | American Board of Pediatrics |
| ABPM | American Board of Preventive Medicine |
| ABPMR | American Board of Physical Medicine and Rehabilitation |
| ABPN | American Board of Psychiatry and Neurology |
| ABPS | American Board of Plastic Surgery |