| AAA | Authentication, Authorization and Accounting | 验证、授权和计帐 |
| AAA | American Automobile Association | 美国汽车协会 |
| AAA | American Arbitration Association | 美国仲裁协会 |
| AAA | American Anthropological Association | 美国人类学协会 |
| AAA | American Academy of Advertising | 美国广告学会 |
| AAA | Agricultural Adjustment Administration | 美国家业调节局 |
| AAA | Amateur Athltic Association | 业余体育协会 |
| AAA | Associate in Applied Arts | 应用艺术准学士学位 |
| AAA | Agricultural Adjustment Act | 农业调整法 |
| AAA | Anti-Aircraft Artillery | 高射炮 |
| AAA | Ancylostomiasis | 钩虫病 |
| AAA | Aromatic Amino Acid | 芳香族氨基酸,芳族氨基酸 |
| AAA | Amino Acid Analysis | 氨基酸分析 |
| AAA | Adaptive Array Antenna | 自适应[自调谐]天线阵天线 |
| AAA | American Accounting Association | 美国会计协会 |
| AAA | Advanced Application Architecture | 高级应用程序体系结构 |
| AAA | anytime, anyplace, anywhere | 任何时间,任何地点,任何方向 |
| AAA | Animal-Assisted Activity | 动物辅助活动 |
| AAA | Association of Active Shareholders (France) | 活跃股东协会(法国) |
| AAA | Amateur Astronomers Association (New York City, NY) | 业余天文学家协会(纽约市) |
| AAA | Asian American Association | 亚裔美国人协会 |
| AAA | Appraisers Association of America | 美国估价师协会 |
| AAA | American Armwrestling Association | 美国摔跤协会 |
| AAA | Atlanta Apartment Association (Atlanta, GA) | 亚特兰大公寓协会(佐治亚州亚特兰大) |
| AAA | Arkansas Apartment Association (Little Rock, AR) | 阿肯色州公寓协会(阿肯色州小石城) |
| AAA | Association Algerriene d'Alphabetisation | Algerriene d 'Alphabetisation协会 |
| AAA | Association of Autonomous Astronauts | 自主宇航员协会 |
| AAA | American Ambulance Association | 美国救护车协会 |
| AAA | American Allergy Association | 美国变态反应协会 |
| AAA | Age Anaesthesia Association | 年龄麻醉协会 |
| AAA | Austin Apartment Association (Austin, TX) | 奥斯汀公寓协会(德克萨斯州奥斯汀) |
| AAA | Australian Association of Accountants | 澳大利亚会计师协会 |
| AAA | Alpha-1 Association of Australia (South Perth, WA, Australia) | 澳大利亚Alpha-1协会(澳大利亚西澳州南珀斯) |
| AAA | Association of Accountants and Auditors | 会计师和审计师协会 |
| AAA | Arkansas Ambulance Association | 阿肯色州救护车协会 |
| AAA | American Accordionists' Association | 美国Accordionists协会 |
| AAA | Australian Automobile Association | 澳大利亚汽车协会 |
| AAA | American Angus Association | 美国安格斯协会 |
| AAA | Antique Automobile Association | 古董汽车协会 |
| AAA | African Awareness Association | 非洲意识协会 |
| AAA | Austrian Automotive Association | 奥地利汽车协会 |
| AAA | Antique Airplane Association | 古董飞机协会 |
| AAA | American Andalusian Association | 美国安达卢西亚协会 |
| AAA | Amateur Athletic Association (of England) | 业余体育协会(英国) |
| AAA | American Association of Anatomists | 美国解剖学家协会 |
| AAA | Adaptable, Accessible and Affordable (disability treatment, Australia) | 适应性、可及性和可负担性(残疾治疗,澳大利亚) |
| AAA | Attitude, Awareness and Accountability (ski safety program) | 态度、意识和责任(滑雪安全计划) |
| AAA | Animal Agriculture Alliance (veterinary) | 动物农业联盟(兽医) |
| AAA | Autoridad de Acueductos y Alcantarillados (Aqueduct and Sewer Authority, Puerto Rico) | Autoridad de Acuectos y Alcantellados(波多黎各水道和下水道管理局) |
| AAA | Triple antibiotic ointment (bacitracin, neomycin, polymixin) | 三联抗生素软膏(杆菌肽、新霉素、多粘菌素) |
| AAA | Aeiou's Alien Archeology (NASA explores) | (美国国家航空和宇宙航行局的外星人考古学Aeiou探索) |
| AAA | American Academy of Audiology | 美国听力学学会 |
| AAA | AsociaciÓn Asperger AndalucÍa | AsociaciÓn Asperger AndalucÍa |
| AAA | Awaiting Aircraft Availability | 等待飞机可用性 |
| AAA | Airborne Assault Area | 空降突击区 |
| AAA | Album Adult Alternative (radio format) | 专辑成人备选(广播格式) |
| AAA | Accumulated Adjustments Account (US Federal Income Tax) | 累计调整账户(美国联邦所得税) |
| AAA | Anticipative Adaptive Array (frequency-hopping communications) | 预期自适应阵列(跳频通信) |
| AAA | Abdominal Aortic Aneurysm | 腹主动脉瘤 |
| AAA | Area Agency on Aging | 地区老龄机构 |
| AAA | Air Avenue of Approach | 空中引道 |
| AAA | Associate of Applied Arts | 应用艺术副学士 |
| AAA | Asian American Alliance | 亚裔美国人联盟 |
| AAA | Administration, Authorization, and Authentication (Software Security) | 管理、授权和身份验证(软件安全) |
| AAA | Amyloid of Aging and Alzheimer Disease | 老年淀粉样蛋白与阿尔茨海默病 |
| AAA | Angle Angle Angle (geometric proof) | 角度角度(几何证明) |
| AAA | Aiesec Alumni Association (CIS) | Aiesec校友会(CIS) |
| AAA | Active Antenna Array | 有源天线阵列 |
| AAA | AEGIS Acquisition Agent | AEGIS采购代理 |
| AAA | Airborne Array Aperture | 机载阵列孔径 |
| AAA | Advanced Adaptive Autopilot | 高级自适应自动驾驶仪 |
| AAA | Adjust for ASCII Addition (X86) | 调整ASCII加法(X86) |
| AAA | ACTH-Resistant Adrenal Insufficiency, Achalasia and Alacrima | ACTH抵抗性肾上腺功能不全、失弛缓症和Alacrima |
| AAA | Agro-Action Allemande | 农业行动阿勒曼德 |
| AAA | Astronaut-Actuated Abort | 宇航员启动的中止 |
| AAA | Aerospace Engineering, Applied Mechanics, and Aviation | 航空航天工程、应用力学和航空 |
| AAA | Advanced Aircraft Analysis | 高级飞机分析 |
| AAA | American Academy of Actuaries | 美国精算学会 |
| AAA | Annals of Archaeology and Anthropology | 考古学和人类学年鉴 |
| AAA | Anygame Anytime Anyplace (gaming clan) | Anygame Anytime Anyplace(游戏部落) |
| AAA | American Academy of Addictionology | 美国成瘾学学会 |
| AAA | Automated Airlift Analysis | 自动空运分析 |
| AAA | Alternate Assembly Area | 备用装配区 |
| AAA | Aces of ANSI Art | ANSI艺术王牌 |
| AAA | American Abstract Artists | 美国抽象艺术家 |
| AAA | Agricultural Adjustment Act of 1933 | 1933年农业调整法 |
| AAA | Academia de Automovilismo Andrade (Guatemala) | 安德拉德汽车学院(危地马拉) |
| AAA | AOES (Advanced Orbital Ephemeris System) Accuracy Assessment | 高级轨道星历系统精度评估 |
| AAA | Acquisition Approval Authority | 收购审批机构 |
| AAA | Acute Anxiety Attack | 急性焦虑症发作 |
| AAA | American Arts Alliance (Washington, DC) | 美国艺术联盟(华盛顿特区) |
| AAA | Allgrove Syndrome | Allgrove综合征 |
| AAA | Automatic Anti-Aircraft (DOD) | 自动反飞机(DOD) |
| AAA | Analog/Analog/Analog (audio CD format, recording/mixing/mastering) | 模拟/模拟/模拟(音频CD唱片/混音格式,掌握) |
| AAA | Animal Acupuncture Academy | 动物针灸学院 |
| AAA | Anything, Anytime, Anywhere | 任何事,任何时间,任何地方 |
| AAA | Authentication, Authorization, and Accounting | 身份验证、授权和记帐 |
| AAA | Army Audit Agency | 陆军审计署 |