| BAA | Basketball Association of America | 全美篮球协会 |
| BAA | baa | 羊叫声 |
| BAA | Bachelor of Art and Architecture | 美术和建筑学士 |
| BAA | Banc of America Advisors, LLC | 美国银行顾问有限责任公司 |
| BAA | Bad Ass Association | 坏驴协会 |
| BAA | Brooklyn Art Association | 布鲁克林艺术协会 |
| BAA | Bialla (Airport Code, New Guinea) | 比亚拉(机场代码,新几内亚) |
| BAA | Biotechnology Association of Alabama | 阿拉巴马州生物技术协会 |
| BAA | British Accounting Association | 英国会计协会 |
| BAA | British Astronomical Association | 英国天文协会 |
| BAA | British Agrochemicals Association | 英国农用化学品协会 |
| BAA | Boston Athletic Association (host of the Boston Marathon) | 波士顿田径协会(波士顿马拉松赛的东道主) |
| BAA | Boomerang Association of Australia | 澳大利亚Boomerang协会 |
| BAA | British Aggregates Association (UK) | 英国骨料协会(英国) |
| BAA | Bowfishing Association of America | 美国钓鱼协会 |
| BAA | Business Administration And Accountancy | 工商管理与会计 |
| BAA | Best Affine Approximation | 最佳仿射逼近 |
| BAA | Bialla, Papua New Guinea | 巴布亚新几内亚比亚拉 |
| BAA | Bragg Amino Acids | 布拉格氨基酸 |
| BAA | Bleedin Amazin Arithmetic | Bledin Amazin算术 |
| BAA | Bad Attitude Airport | 机场态度恶劣 |
| BAA | Broad Area Announcement | 广域网公告 |
| BAA | Buy American Act | 购买美国货法案 |
| BAA | Budget Activity Account | 预算处报表 |
| BAA | Bomber Alert Area | 轰炸机警戒区 |
| BAA | Board of Assistance Appeals | 援助上诉委员会 |
| BAA | Bachelier en Administration des Affaires | 事务管理学士 |
| BAA | brain associated antigen | 脑相关抗原 |
| BAA | Business Associate Agreement (HIPAA) | 商业伙伴协议(HIPAA) |
| BAA | branched-chain amino acid | 支链氨基酸 |
| BAA | Business Administration and Analysis | 企业管理与分析 |
| BAA | n-benzoyl-l-argininamide | n-苯甲酰基-l-精氨酰胺 |
| BAA | Bugles Across America | 美国各地的臭虫 |
| BAA | Bay Area Action | 湾区行动 |
| BAA | Brigade Administration Area | 旅行政区 |
| BAA | Backup Aircraft Authorization | 备用飞机的审定 |
| BAA | BaccalaurÉat en Administration des Affaires (French) | BaccalaurÉat en Administration des Affaires (French) |
| BAA | Bilateral Airworthiness Agreement | 双边适航协议 |
| BAA | Business Area Analysis | 业务领域分析 |
| BAA | Batting Average Against (baseball) | 对(棒球)的击球平均数 |
| BAA | Broad Agency Announcement | 广泛机构公告 |
| BAA | British Airports Authority | 英国航空港管理局 |
| BAA | Battlefield Automation Appraisal | 战场自动化评估 |
| BAA | Basic Acoustic Analysis | 基本声学分析 |
| BAA | Master of Orion 2: Battle At Antares (computer game) | 猎户座大师2:心宿二之战(电脑游戏) |
| BAA | Backing Australia's Ability | 支持澳大利亚的能力 |
| BAA | Backup Aerospace Vehicle Authorization | 备用航空航天器的审定 |