| Acronym | Definition |
|---|
| BAO➣Batman: Arkham Origins (gaming) |
| BAO➣Baryon Acoustic Oscillations (cosmology) |
| BAO➣Business Analytics and Optimization (IBM) |
| BAO➣Basal Acid Output (medical test) |
| BAO➣Business Analyst Online (software) |
| BAO➣Bundesabgabenordnung (Austria) |
| BAO➣Bouche à Oreille (French: Word of Mouth) |
| BAO➣Brussels Agentschap voor de Onderneming (Dutch: Brussels Enterprise Agency; Brussels, Belgium) |
| BAO➣Behavior Analyst Online (online scientific journals) |
| BAO➣Bilateral Affairs Officer (US DoD) |
| BAO➣Boulder Atmospheric Observatory |
| BAO➣Birmingham AIDS Outreach |
| BAO➣Bachelor of Obstetrics |
| BAO➣Bloc Américaniste Occidentaliste (French: American Western Bloc) |
| BAO➣Bomb Appraisal Officer (US TSA) |
| BAO➣Boeing Aerospace Operations |
| BAO➣Bruce Artwick Organisation |
| BAO➣Best Available Option |
| BAO➣Bachelor of the Arts of Obstetrics (UK) |
| BAO➣Branch Artery Occlusion |
| BAO➣Battalion Ammunition Officer (US Army) |
| BAO➣Baikal Astrophysical Observatory (Listvyanka, Russia) |
| BAO➣Best Atomic Orbital |
| BAO➣Breathing Apparatus Operator (safety) |
| BAO➣2,5-Bis-4-Aminophenyl-1,3,4-Oxadiazole (chemistry) |
| BAO➣Bear Artists Online (est. 2008) |
| BAO➣Burlington Area Office |
| BAO➣Business Administration Officer Committees |