| Acronym | Definition |
|---|
| ABA | American Bar Association |
| ABA | American Bankers Association |
| ABA | American Booksellers Association |
| ABA | Applied Behavior Analysis (autism treatment) |
| ABA | American Basketball Association |
| ABA | American Bus Association |
| ABA | American Bicycle Association |
| ABA | Association for Behavior Analysis |
| ABA | American Birding Association |
| ABA | Applied Behavioral Analysis |
| ABA | Amateur Boxing Association |
| ABA | American Beverage Association |
| ABA | Architectural Barriers Act |
| ABA | Australian Breastfeeding Association |
| ABA | Abscisic Acid (plant hormone) |
| ABA | American Bakers Association |
| ABA | American Board of Anesthesiology |
| ABA | Awfully Big Adventure |
| ABA | Abakan (Russia) |
| ABA | American Bad Ass |
| ABA | Australian Bankers Association |
| ABA | American Burn Association |
| ABA | Atlanta Bar Association (Atlanta, GA) |
| ABA | Australian Broadcasting Authority |
| ABA | Art by Accident |
| ABA | Address Book Archive |
| ABA | American Bass Anglers (formerly Military Bass Anglers Association; Athens, AL) |
| ABA | Anchin, Block & Anchin (accounting firm; New York) |
| ABA | Associação Brasileira de Antropologia (Brazil) |
| ABA | Accredited Business Accountant |
| ABA | Arizona Builders’ Alliance (est. 1994) |
| ABA | Alliance Bank of Arizona |
| ABA | Allen Brain Atlas (AIBS research) |
| ABA | American Baptist Association |
| ABA | Asian Business Association |
| ABA | Asahi Broadcasting Aomori (Japan) |
| ABA | American Book Awards |
| ABA | Académie des Beaux-Arts (French: Academy of Fine Arts; Kinshasa, Democratic Republic of Congo) |
| ABA | Australian Bicentennial Authority |
| ABA | American Bantam Association (Augusta, NJ bantam breeders) |
| ABA | Applications Based Architecture (software engineering) |
| ABA | American Bullmastiff Association |
| ABA | Allied Beauty Association |
| ABA | American Bridge Association |
| ABA | Auto Bedrijven Associatie (Dutch) |
| ABA | American Bass Association |
| ABA | Acrylonitrile-Butadiene Acrylate |
| ABA | Australian Biotechnology Association |
| ABA | Arrogant Bastard Ale |
| ABA | American Ballet Academy |
| ABA | American Benedictine Academy (est. 1947) |
| ABA | Automatic Brake Adjuster |
| ABA | American Bioenergy Association |
| ABA | Arizona Bioindustry Association (also seen as ABIA) |
| ABA | Address Book Archive (file name extension) |
| ABA | American Beauty Association |
| ABA | Alimentos Balanceados para Animales (Spanish) |
| ABA | Adaptive Battlespace Awareness (US DoD Advanced Concept Technology Demonstration) |
| ABA | Associação Brasileira de Aeromodelismo (Brazil) |
| ABA | Accommodation Booking Agency (various locations) |
| ABA | Adult Buddhist Association |
| ABA | American Bartenders Association |
| ABA | Agent Based Architecture |
| ABA | Aboriginal Benefits Account (royalty distribution account established under the Aboriginal Land Rights Act) |
| ABA | American Badminton Association |
| ABA | Acceso Banda Ancha |
| ABA | Arabian Breeders Association |
| ABA | Acid-Base Account |
| ABA | Asia Biomass Association (Japan) |
| ABA | Alberta Beekeepers Association |
| ABA | Another Bloody Acronym |
| ABA | Austrian Biologists Association |
| ABA | Aaron Burr Association |
| ABA | Appropriation & Budget Activity |
| ABA | American, British, Australian |
| ABA | Allgemeine Basisausbildung (German) |
| ABA | Association for Balkan Anthropology |
| ABA | Agent-Based Application |
| ABA | American Bowling Association |
| ABA | Aberrated Beam Analyzer |
| ABA | Asymptotic Bound Analysis |
| ABA | Advanced Ballistic Algorithm |
| ABA | Adaptable Business Architecture (Peoplesoft) |
| ABA | American Bison Association |
| ABA | Alaska Boating Association |
| ABA | Area-by-Area Allocation |
| ABA | Arbeitsgemeinschaft für Betriebliche Altersversorgung eV |
| ABA | Arthroscopie Belge - Belgische Arthroscopie (Belgian Arthroscopy Association) |
| ABA | Above Mean Axis (drawing reference plane) |
| ABA | American Bedding Association |
| ABA | Alahambra Creek |
| ABA | Auto-Build Authorization |
| ABA | Alex-Branch Associates Ltd (UK) |
| ABA | American Bell Association Internatinal, Inc |
| ABA | Association of Black Alumni |
| ABA | Annual Budget Authorization |
| ABA | Advanced Battery Assessment |
| ABA | Arusha Beekeepers' Association (Tanzania) |
| ABA | Anti-Bullying Association |
| ABA | Andreas Bergmann Automation LLC (Navarre, FL) |