| Abbreviation | Definition |
|---|---|
| ABNR | Ali Budiardjo Nugroho Reksodiputro |
| ABNR | Anheuser Busch Natural Resources |
| ABNU | Anthon B Nilsen Utdanning |
| ABO | Abstract Bibliographic Object |
| ABO | Accelerated Bookbuilt Offering |
| ABO | Accumulated Benefit Obligations |
| ABO | Agar Blunt Onida |
| ABO | Alcoholic Beverage Operator |
| ABO | Algae Biomass Organization |
| ABO | Algal Biomass Organization |
| ABO | Alpha Beta and Omega |
| ABO | Alpha Beta Omega |
| ABO | American Beard of Opticianry |
| ABO | American Board of Orthodontics |
| ABO | Angular Box Office |
| ABO | Anstee Barklem and O |
| ABO | Archive Backup Online |
| ABO | As brokers only |
| ABO | Asset based ordering |
| ABO | Authorities Budget Office |