| Acronym | Definition |
|---|
| BAA | Boston Athletic Association (host of the Boston Marathon) |
| BAA | British Airports Authority |
| BAA | Basketball Association of America |
| BAA | Buy American Act |
| BAA | Business Associate Agreement (HIPAA) |
| BAA | Batting Average Against (baseball) |
| BAA | Backing Australia's Ability |
| BAA | British Accounting Association |
| BAA | Broad Area Announcement |
| BAA | British Aggregates Association (UK) |
| BAA | Bialla (Airport Code, New Guinea) |
| BAA | Business Area Analysis |
| BAA | Bugles Across America |
| BAA | Baccalauréat en Administration des Affaires (French) |
| BAA | British Agrochemicals Association |
| BAA | Bloomington Athletic Association (Bloomington, MN) |
| BAA | Bowfishing Association of America |
| BAA | Biotechnology Association of Alabama |
| BAA | Bilateral Airworthiness Agreement |
| BAA | Bachelier en Administration des Affaires |
| BAA | Boomerang Association of Australia |
| BAA | Board/Authority Authorized Course (Canada) |
| BAA | Board of Assistance Appeals |
| BAA | Bureau d'Accompagnement Artistique (French: Bureau of Artistic Support) |
| BAA | Backup Aircraft Authorization |
| BAA | Banc of America Advisors, LLC |
| BAA | Beers Across America (beer club) |
| BAA | Bomber Alert Area |
| BAA | Master of Orion 2: Battle At Antares (computer game) |
| BAA | Budget Activity Account |
| BAA | Brooklyn Art Association |
| BAA | Belgian Aluminium Association (Belgium) |
| BAA | Brigade Administration Area |
| BAA | Backup Aerospace Vehicle Authorization |
| BAA | Battlefield Automation Appraisal |
| BAA | Business Administration and Analysis |
| BAA | Basic Acoustic Analysis |
| BAA | Ban All Acronyms |
| BAA | British Astronomical Association |
| BAA | Business Achievement Award (various locations) |
| BAA | Black or African American (population classification) |
| BAA | Broad Agency Announcement |