| ABO | Abonnement 
| Others |
| ABO | Abstract Bibliographic Object
| Others |
| ABO | Accelerated Bookbuilt Offering
| Others |
| ABO | Access Business Online
| Others |
| ABO | Accumulated Benefit Obligation
| Others |
| ABO | Accumulated Benefit Obligations
| Others |
| ABO | Across Border Operations
| Others |
| ABO | Action Based Outcome
| Others |
| ABO | Active Business Object
| Others |
| ABO | Adaptive Binary Optimization
| Others |
| ABO | Admin Base Object
| Others |
| ABO | Agar Blunt Onida
| Others |
| ABO | Agent of Biological Origin
| Others |
| ABO | Agents of Biological Origin
| Others |
| ABO | Air Bag Only
| Others |
| ABO | Air Base Operability
| Others |
| ABO | Air-Breathing Organ
| Others |
| ABO | Alcoholic Beverage Operator
| Others |
| ABO | Algae Biomass Organization
| Others |
| ABO | Algal Biomass Organization
| Others |
| ABO | Alpha Beta and Omega
| Others |
| ABO | Alpha Beta Omega
| Others |
| ABO | Alpha Boat Originals
| Others |
| ABO | Always Be Oriented
| Others |
| ABO | American Beard of Opticianry
| Others |
| ABO | American Board of Ophthalmology
| Others |
| ABO | American Board of Opticianry
| Others |
| ABO | American Board of Optometry
| Others |
| ABO | American Board of Orthodontics
| Others |
| ABO | American Board of Otolaryngology
| Others |
| ABO | Amway Business Owner
| Others |
| Abo | an Australian Aborigine, Aboriginal, koori
| Others |
| ABO | Angular Box Office
| Others |
| ABO | Anstee Barklem and O
| Others |
| ABO | Anything But Ordinary
| Others |
| ABO | Archive Backup Online
| Others |
| ABO | Army Budget Office
| Others |
| ABO | As brokers only
| Others |
| ABO | Asset based ordering
| Others |
| ABO | Assistant Banking Officer
| Others |
| ABO | Australian Beach Outdoor
| Others |
| ABO | Authorities Budget Office
| Others |
| ABO | Automated Box Office
| Others |
| ABO | Aviators Breathing Oxygen
| Others |
| ABO | Blood Grouping System
| Others |
| ABO | Blood types A, B, and O Blood Typing System
| Others |
| ABO | three basic blood groups
| Others |