| AOB | Academic Office Building 
| Others |
| AOB | Accessory Olfactory Bulb
| Others |
| AOB | Accounting Operations Branch
| Others |
| AOB | Ace of Base
| Others |
| AOB | Acetone On Breath
| Others |
| AOB | Address Old Business
| Others |
| AOB | Adiabatic Oxygen Bomb
| Others |
| AOB | Administrative Office Building
| Others |
| AOB | Advanced Operations Base
| Others |
| AOB | Advanced Organic Building
| Others |
| AOB | Agenda on Board
| Others |
| AOB | Aiba Open Boxing
| Others |
| AOB | Aiden Onion Bag
| Others |
| AOB | Air Order of Battle
| Others |
| AOB | Alcohol On Breath
| Others |
| AOB | All Other Breeds
| Others |
| AOB | All Over Beautiful
| Others |
| AOB | Alma's Only Bar
| Others |
| AOB | Alpha Omega Beasts
| Others |
| AOB | American Oriental Bioengineering
| Others |
| AOB | American Outdoor Brands
| Others |
| AOB | Ammonia Oxidizing Bacteria
| Others |
| AOB | Andhra-Odisha Border
| Others, Border, State |
| AOB | Andy O Brien
| Others |
| AOB | Angels Of Blind
| Others |
| AOB | Angry Overweight Boy
| Others |
| AOB | Annals Of Botany
| Others |
| AOB | Anterior Open Bite
| Others |
| AOB | Anthropology of Britain
| Others |
| AOB | Antigua Overseas Bank
| Others |
| AOB | Any Other Bazuka
| Others |
| AOB | Any Other Biscuits
| Others |
| AOB | Any Other Bugs
| Others |
| AOB | Any Other Busi
| Others |
| AOB | Any Other Business
| Others |
| AOB | Approved Operating Budget
| Others |
| AOB | Area Of Benefit
| Others |
| AOB | Area One Boards
| Others |
| AOB | Aristocrat Of Bands
| Others |
| AOB | Array of Bytes
| Others |
| AOB | Art of Books
| Others |
| AOB | Assignment Of Benefits
| Others |
| AOB | Association of Brewers
| Others |
| AOB | Astronomical Observatory Belgrade
| Others |
| AOB | Astronomical Observatory of Belgrade
| Others |
| AOB | Athletic Office Building
| Others |
| AOB | Atrium on Bay
| Others |
| AOB | Audio Object
| Others |
| AOB | Audio Output Board
| Others |
| AOB | Audit Oversight Board (Malaysia)
| Others |
| AOB | Auditorium on Broadway
| Others |
| AOB | Auditors Oversight Board (Egypt)
| Others |
| AOB | Austin O' Brien
| Others |
| AOB | Austin O'Brien
| Others |
| AOB | Aviation Operations Branch
| Others |