| BAA | Bad Attitude Airport 
| Others |
| BAA | Basketball Association of America
| Others |
| BAA | Batman Arkham Asylum
| Others |
| BAA | Batman: Arkham Asylum
| Others |
| BAA | Battlefield Automation Appraisal
| Others |
| BAA | Bay Area Action
| Others |
| BAA | Be An Athlete
| Others |
| BAA | Berjaya Auto Alliance
| Others |
| BAA | Best Affine Approximation
| Others |
| BAA | Bialla, Papua New Guinea
| Others |
| BAA | Big A** Anteaters
| Others |
| BAA | Birmingham Anglers Association
| Others |
| BAA | Black Alumni Association
| Others |
| BAA | Blanket Authorization Agreement
| Others |
| BAA | Bleedin Amazin Arithmetic
| Others |
| BAA | Blogger Auto Award
| Others |
| BAA | Bloomington Athletic Association
| Others |
| BAA | Blue Atmosphere Army
| Others |
| BAA | Board of Assessment Appeals
| Others |
| BAA | Board on Agriculture Assembly
| Others |
| BAA | Bosch Abs Actuator
| Others |
| BAA | Bosch Automotive Aftermarket
| Others |
| BAA | Boston Arts Academy
| Others |
| BAA | Boston Athletic Association
| Others |
| BAA | Bragg Amino Acids
| Others |
| BAA | Brand Activation Association
| Others |
| BAA | Breed Age Average
| Others |
| BAA | Brick Appreciation Association
| Others |
| BAA | Bridge Automotive Academy
| Others |
| BAA | British Academy of Audiology
| Others |
| BAA | British Agrochemicals Association
| Others |
| BAA | British Airports Authority
| Others |
| BAA | British Animation Awards
| Others |
| BAA | British Archaeological Association
| Others |
| BAA | British Astronomical Association
| Others |
| BAA | British Aviation Authority
| Others |
| BAA | British Awarding Association
| Others |
| BAA | Broad Agency Announcement
| Others |
| BAA | Broad Agency Announcements
| Others |
| BAA | Broad Area Announcement
| Others |
| BAA | Bulletin to Available Agents
| Others |
| BAA | Bureau of Assessment and Accountability
| Others |
| BAA | Business Achievement Awards
| Others |
| BAA | Business Administration And Accountancy
| Others |
| BAA | Business Associate Agreement
| Others |