| Abbreviation | Definition |
|---|---|
| ABA | Applying Behavioural Analysis |
| ABA | Association for Behavior Analysis |
| ABA | Autism and Behavior Analysis |
| ABAA | Air Barrier Association of America |
| ABAA | Air Barrier Association of America's |
| ABAA | Antiquarian Booksellers Association of America |
| ABAAG | A Boy And A Girl |
| ABAAHP | American Board of Anti Aging Health Practitioners |
| ABAAS | Architectural Barriers Act Accessibility Standards |
| ABAB | Administrative Burden Advisory Board |
| ABAB | Administrative Burdens Advisory Board |
| ABAC | Advanced Biomolecular Analysis Core |
| ABAC | Attribute Based Access Controls |
| ABAC | Authorization Based Access Control |
| ABACUS | Architecture Based Analysis Communication and Understanding of Systems |
| ABAD | Air Base Air Defense |
| ABAD | Alternating Beam Assisted Deposition |
| ABAD | Amyloid Binding Alcohol Dehydrogenase |
| ABAD | Association of Builders and Developers |
| ABADAS | abada abada |