| Acronym | Definition |
|---|
| ABO➣Abonnement (German: Subscription) |
| ABO➣Abortion |
| ABO➣Aboriginal |
| ABO➣Anybody but Obama (politics) |
| ABO➣Amway Business Owner |
| ABO➣Accumulated Benefit Obligation |
| ABO➣Accumulated Benefit Obligation (pension plan accounting) |
| ABO➣Admin Base Object |
| ABO➣Action Based Outcome |
| ABO➣Active Business Object |
| ABO➣American Board of Ophthalmology |
| ABO➣American Board of Opticianry (Springfield, VA) |
| ABO➣Algal Biomass Organization (Preston, MN) |
| ABO➣American Board of Orthodontics |
| ABO➣Associated Builders and Owners |
| ABO➣American Board of Otolaryngology |
| ABO➣Association of British Orchestras |
| ABO➣Amsterdam Baroque Orchestra |
| ABO➣Alaska Bird Observatory |
| ABO➣Aviators Breathing Oxygen |
| ABO➣Army Budget Office |
| ABO➣Air Base Operability |
| ABO➣American Board of Opticians |
| ABO➣Agents of Biological Origin |
| ABO➣Accelerated Bookbuilt Offering (investing) |
| ABO➣Automated Box Office (American Multi-Cinema, Inc.) |
| ABO➣Admin Base Objects (Microsoft IIS) |
| ABO➣Air-Breathing Organ (fish biology) |
| ABO➣Association des Bibliotechniciens de l'Ontario |
| ABO➣Antibodies Blood Group |
| ABO➣Atlanta Baroque Orchestra (Atlanta, Georgia) |
| ABO➣Adiabatic Born-Oppenheimer |
| ABO➣Annular Beam Oscillator |
| ABO➣Arbitration Out |
| ABO➣Airborne Order |
| ABO➣Advanced Byte-Oriented |
| ABO➣Absent Bed Occupancy |
| ABO➣Asociación Benedictina Olivetana Centro Educacional (Olivetana Benedictine Association Educational Center, Guatemala) |
| ABO➣Antibonding Bond Orbital |
| ABO➣Across Border Operations |