| ARA | Aircraft Rescue Association | 飞机救援协会 |
| ARA | American Railway Association | 美国铁路协会 |
| ARA | African Railway Association | 非洲铁路协会 |
| ARA | acetyiene reduction activity | 乙炔还原活性 |
| ARA | Average Response Amplitude | 平均响应幅度 |
| ARA | Airborne Radar Attachment | 机载雷达附件 |
| ARA | American Romagnola Association | 美国Romagnola协会 |
| ARA | Association of Retired Americans | 美国退休人员协会 |
| ARA | Awards and Recognition Association | 奖励和表彰协会 |
| ARA | Applied Research Associates | 应用研究协会 |
| ARA | Automotive Rebuilders Association | 汽车重建协会 |
| ARA | Accounting Research Association | 会计研究协会 |
| ARA | Automotive Recyclers Association | 汽车回收商协会 |
| ARA | Ada Resource Association (trade group) | Ada资源协会（贸易团体） |
| ARA | Audubon Recreation Association (Pennsylvania) | 奥杜邦娱乐协会（宾夕法尼亚州） |
| ARA | Association of Relocation Agents | 搬迁代理协会 |
| ARA | Australian Retailers Association | 澳大利亚零售商协会 |
| ARA | Amateur Rowing Association (UK) | 业余划船协会（英国） |
| ARA | American Running Association | 美国跑步协会 |
| ARA | American Rheumatism Association | 美国风湿病协会 |
| ARA | American Retirees Association | 美国退休人员协会 |
| ARA | Applied Research Associates, Inc. | 应用研究协会。 |
| ARA | American Restroom Association (now North American Restroom Association) | 美国洗手间协会（现为北美洗手间协会） |
| ARA | American Remount Association | 美国移民协会 |
| ARA | Antenna Research Associates | 天线研究协会 |
| ARA | American Revenue Association | 美国税收协会 |
| ARA | American Rental Association | 美国租赁协会 |
| ARA | Agricultural Retailers Association | 农业零售商协会 |
| ARA | Association of Roman Archaeology | 罗马考古学协会 |
| ARA | Alabama Retail Association | 阿拉巴马州零售协会 |
| ARA | Airborne Radar Approach | 机载雷达进近 |
| ARA | Accumulate-Repeat-Accumulate (coding scheme) | 累加重复累加（编码方案） |
| ARA | Automatic Reimbursement Authority | 自动报销权限 |
| ARA | Accelerated Readiness Analysis | 加速准备分析 |
| ARA | Advanced Rate Annuity | 预付费率年金 |
| ARA | Another Right Answer | 另一个正确答案 |
| ARA | Airborne Reconnaissance Architecture | 机载侦察体系结构 |
| ARA | Amsterdam, Rotterdam, Antwerp (shipping industry) | 阿姆斯特丹、鹿特丹、安特卫普（航运业） |
| ARA | Accredited Rural Appraiser (American Society of Farm Managers & Rural Appraisers, ASFMRA) | 美国社会认可的农村评估师的农场经理和农村估价师、ASFMRA) |
| ARA | Apartment Realty Advisors | 公寓房地产顾问 |
| ARA | Attitude Reference Assembly | 姿态参考组件 |
| ARA | Associate of the Royal Academy | 皇家学院副院长 |
| ARA | Automatic Reimbursement Account | 自动报销账户 |
| ARA | Assistant Regional Administrator | 助理区域管理员 |
| ARA | Algemeen Rijksarchief | Algemen Rijksarchief公司 |
| ARA | Asynchronous Ripple Adder | 异步纹波加法器 |
| ARA | Auxiliary Reactor Area (Idaho National Laboratory) | 辅助反应堆区（爱达荷国家实验室） |
| ARA | Atorvastatin Research Awards | 阿托伐他汀研究奖 |
| ARA | Animal Rights Activists | 动物权利活动家 |
| ARA | Arcade and Attica Railroad Corporation | Arcade and Attica铁路公司 |
| ARA | Aracruz Celulose, S. A. | Aracruz Celulose，S.A.公司。 |
| ARA | Angiotensin Receptor Antagonist | 血管紧张素受体拮抗剂 |
| ARA | AsociaciÓn Regional Agraria | AsociaciÓn Regional Agraria |
| ARA | Any Responsible Adult | 任何负责任的成年人 |
| ARA | Army Of Revolutionary Assassins | 革命刺客军 |
| ARA | Agency Reimbursement Amount | 机构报销金额 |
| ARA | Anthracycline Resistance Associated | 蒽环类耐药相关 |
| ARA | Altstoff Recycling Austria | Altstoff回收奥地利 |
| ARA | arabinose | 阿拉伯糖 |
| ARA | Angels Rainbows And All | 天使彩虹和所有 |
| ARA | Aerosol Liquid with Adapter | 带适配器的气雾剂液体 |
| ARA | antireticulin antibody | 抗竞蛋白抗体 |
| ARA | aortic root angiogram | 主动脉根部血管造影 |
| ARA | Action Research Arm | 行动研究组 |
| ARA | Australian Regular Army | 澳大利亚正规军 |
| ARA | AppleTalk Remote Access | AppleTalk远程访问 |
| ARA | Apple Remote Access | Apple远程访问 |
| ARA | Alliance for Retired Americans | 退休美国人联盟 |
| ARA | Anti-Racist Action | 反种族主义行动 |
| ARA | Academy of Rehabilitative Audiology | 康复听力学学会 |
| ARA | Aerial Rocket Artillery | 空中火箭炮兵 |
| ARA | Asset Recovery Agency (UK legislation) | 资产追回机构（英国法律） |
| ARA | Annual Reports and Accounts | 年度报告和账目 |
| ARA | Airborne Radio Auxiliary (Assembly) | 机载无线电辅助设备（组件） |
| ARA | Armada de la RepÚblica Argentina (Argentine navy) | Armada de la RepÚblica Argentina (Argentine navy) |
| ARA | Address Resolution Advertisement (ATM networking) | 地址解析广告（ATM网络） |
| ARA | Airborne Research Australia | 澳大利亚航空研究 |
| ARA | Aggregate Risk Analysis | 总体风险分析 |
| ARA | Army Registration Authority | 陆军登记局 |
| ARA | Associate Regional Administrator | 副区域管理员 |
| ARA | Acquisition Resources and Analysis (Directorate in the Office of the Secretary of Defense) | 采办资源和分析（国防部长办公室董事会） |
| ARA | Active Radar Array | 有源雷达阵列 |
| ARA | Autoresonant Accelerator | 自谐振加速器 |
| ARA | Aryan Republican Army (US militia organization) | 雅利安共和军（美国民兵组织） |
| ARA | Androgen Receptor-Associated Coregulator | 雄激素受体相关协同调节器 |
| ARA | Avert Risk Assessment (anti-virus ERT) | Avert风险评估（反病毒ERT） |
| ARA | Audience Research Analysis (Company) | 受众研究分析（公司） |
| ARA | Adenosine Receptor Agonist | 腺苷受体激动剂 |
| ARA | Area Redevelopment Administration | 区域重建管理 |
| ARA | Airborne Relay Aircraft | 机载中继飞机 |
| ARA | Agricultural Research Administration | 农业研究管理局 |
| ARA | Assigned Responsible Agency | 指定负责机构 |
| ARA | Annual Review of Agriculture | 农业年度回顾 |
| ARA | Annual Review of Anthropology (journal) | 人类学年刊 |
| ARA | Academic Research Alliance | 学术研究联盟 |
| ARA | Army Radiation Authorization | 陆军辐射授权 |
| ARA | Associate Reinsurance Administration (LOMA designation) | 再保险管理助理（LOMA名称） |
| ARA | Argentina Austral (national currency since 1985; replaced by new Peso, 1992) | 阿根廷澳大拉（1985年以来的国家货币；1992年被新比索取代） |