| Acronym | Definition |
|---|
| OBA➣Oklahoma Bar Association |
| OBA➣Old Boys Association (various locations) |
| OBA➣Orange Beach Alabama |
| OBA➣Office Business Application (Microsoft) |
| OBA➣Openbare Bibliotheek Amsterdam (Dutch: Amsterdam Public Library; Amsterdam, Netherlands) |
| OBA➣Ontario Bar Association (law; Ontario, Canada) |
| OBA➣On Board Air (off road vehicle having compressed air source) |
| OBA➣Outcomes Based Accountability (UK) |
| OBA➣Obadiah |
| OBA➣Oxford Business Alumni (UK) |
| OBA➣Outlook Backup Assistant |
| OBA➣Office Business Applications |
| OBA➣Office of Biotechnology Activities (US National Institutes of Health) |
| OBA➣On Base Average (or percentage; baseball statistic) |
| OBA➣Online Behavioral Advertising (Internet marketing; various companies) |
| OBA➣Output-Based Aid |
| OBA➣Outward Bound Australia (est. 1956) |
| OBA➣Oxygen Breathing Apparatus |
| OBA➣Österreichisches Bank-Archiv (Austrian banking periodical) |
| OBA➣Optical Brightening Agent |
| OBA➣Ontario Badminton Association (North York, ON, Canada) |
| OBA➣Offshore Banking Act (various locations) |
| OBA➣Overseas Buffaloes Association (various locations) |
| OBA➣Organization of Black Alumni (Wayne State University; Detroit, MI) |
| OBA➣Ontario Basketball Association |
| OBA➣Object Behavior Analysis |
| OBA➣Ontario Beekeepers' Association |
| OBA➣Outside Business Activities (NASD/FINRA) |
| OBA➣Outsourced Benefits Administration (software; Workscape) |
| OBA➣Oregon Bluegrass Association |
| OBA➣Open Book Accounting |
| OBA➣Ontario Band Association |
| OBA➣Outcomes Based Access |
| OBA➣Operation Bootstrap Africa (Minnesota) |
| OBA➣Osaka Bankers Association (Osaka, Japan) |
| OBA➣Optical Booster Amplifier |
| OBA➣Octave Band Analyzer |
| OBA➣Office of Biotechnology Activity |
| OBA➣Open Box Audit |
| OBA➣Oberhasli Breeders of America |
| OBA➣Oklahoma Bandmaster's Association |
| OBA➣Operating Basis Accident |
| OBA➣Operating Budget Authority |
| OBA➣Optical Bleaching Agent |
| OBA➣Operating Balancing Agreement (natural gas industry) |
| OBA➣On-Board Allowance |
| OBA➣Outward Bound Adventures, Inc. (Pasadena, CA) |
| OBA➣Oklahoma Bondsman Association (Oklahoma City, OK) |
| OBA➣Oklahoma Beekeepers Association |
| OBA➣Ottawa Baptist Association (Canada) |
| OBA➣Outside Bilateral Area |
| OBA➣Ontario Bison Association |
| OBA➣Ocala Bowling Association (Florida, USA) |
| OBA➣Office of Business Administration (various organizations) |
| OBA➣Open Book Assessment (academics) |