| CASA | Civil Aviation Safety Authority | 澳大利亚民用航空安全局 |
| CASA | Current Account Savings Account (banking) | 活期储蓄账户（银行） |
| CASA | Canadian Alliance of Student Associations | 加拿大学生协会联盟 |
| CASA | Children & Adolescent Services Association | 儿童和青少年服务协会 |
| CASA | Child and Adolescent Services Association (Canada) | 儿童和青少年服务协会（加拿大） |
| CASA | Canadian Advertising and Sales Association | 加拿大广告和销售协会 |
| CASA | Caring And Sharing Association (Ireland) | 关爱与分享协会（爱尔兰） |
| CASA | Capital Area Soccer Association (Harrisburg, Pennsylvania) | 首都地区足球协会（宾夕法尼亚州哈里斯堡） |
| CASA | Computer and Automated Systems Association (SME) | 计算机和自动化系统协会（SME） |
| CASA | Community And School Association | 社区和学校协会 |
| CASA | Cuban-American Student Association | 古巴裔美国学生协会 |
| CASA | Canadian Association of School Administrators | 加拿大学校管理者协会 |
| CASA | Contemporary A Cappella Society of America | 当代美国Cappella协会 |
| CASA | Canadian Amateur Swimming Association | 加拿大业余游泳协会 |
| CASA | Canadian Agricultural Safety Association (Winnipeg, MB, Canada) | 加拿大农业安全协会（温尼伯，MB，加拿大） |
| CASA | Chinese-American Students Association | 美国华裔学生协会 |
| CASA | Community Activities And Services Association | 社区活动和服务协会 |
| CASA | Colombian American Service Association, Inc. (established in 1994 to assist and support the Hispanic community) | 哥伦比亚美国服务协会（成立于1994年，旨在帮助和支持西班牙裔社区） |
| CASA | Cruising Association of South Africa | 南非邮轮协会 |
| CASA | Colombian American Service Association | 哥伦比亚美国服务协会 |
| CASA | Community Advocacy Services Association | 社区倡导服务协会 |
| CASA | Car Audio Specialists Association | 汽车音响专家协会 |
| CASA | Computer Aided/Assisted Sperm Analysis | 计算机辅助/辅助精子的分析 |
| CASA | Computer Assisted Sperm Analysis | 计算机辅助精子分析 |
| CASA | Court Appointed Special Advocate | 法院任命的特别检察官 |
| CASA | Computer Algebra System for Algebraic Geometry | 代数几何计算机代数系统 |
| CASA | Central and South America | 中美洲和南美洲 |
| CASA | Center for Astrophysics and Space Astronomy | 天体物理学和空间天文学中心 |
| CASA | Chicago Air Shower Array | 芝加哥空气淋浴器阵列 |
| CASA | Court Appointed Special Advocates | 法院任命的特别辩护律师 |
| CASA | Center on Addiction and Substance Abuse | 成瘾和药物滥用中心 |
| CASA | Computer Aided Situation Awareness | 计算机辅助态势感知 |
| CASA | Clean Air Strategic Alliance | 清洁空气战略联盟 |
| CASA | Centre for Advanced Spatial Analysis | 高级空间分析中心 |
| CASA | Computational Auditory Scene Analysis | 计算听觉场景分析 |
| CASA | Casablanca Stock Exchange | 卡萨布兰卡证券交易所 |
| CASA | Civil Aviation Safety Authority (Australia) | 民航安全局（澳大利亚） |
| CASA | Community Action Stops Abuse | 社区行动制止虐待 |
| CASA | CrÉdit Agricole SA | CrÉdit Agricole SA |
| CASA | Computer-Aided Systems Analysis | 计算机辅助系统分析 |
| CASA | Centres Against Sexual Assault (Australia) | 反性侵中心（澳大利亚） |
| CASA | Center for Arabic Study Abroad | 阿拉伯留学中心 |
| CASA | Colombo-American Student Alliance (University of Houston) | 科伦坡美国学生联盟（休斯顿大学） |
| CASA | Citizens Against Sexual Assault | 公民反对性侵 |
| CASA | Construcciones Aeronauticas SA | Construcciones Aeronautias SA公司 |
| CASA | Centro de AcciÓn Social (Guatemala political party) | Centro de AcciÓn Social (Guatemala political party) |
| CASA | Caffeine-Assisted Self-Awareness | 咖啡因辅助自我意识 |
| CASA | Centre for Analysis, Scientific computing and Applications (Eindhoven The Netherlands) | 分析、科学计算和应用中心（荷兰埃因霍温） |
| CASA | Cultural Awareness and Spanish-skills Aid | 文化意识和西班牙语技能援助 |
| CASA | Criticality-Associated Similarity Analysis | 关键性相关相似性分析 |
| CASA | Community Alternative Systems Agency (New York) | 社区替代系统局（纽约） |
| CASA | Center Against Sexual Assault | 反性侵中心 |
| CASA | Center Against Spouse Abuse (Florida) | 反对虐待配偶中心（佛罗里达州） |
| CASA | Churches Auxiliary For Social Action | 社会行动辅助教堂 |
| CASA | Center Against Spousal Abuse | 反对虐待配偶中心 |
| CASA | Current Accounts and Saving Accounts | 活期账户和储蓄账户 |
| CASA | Carnegie-Ames-Stanford Approach | 卡内基-艾姆斯-斯坦福方法 |
| CASA | County After School Activities | 县课后活动 |
| CASA | Controller Automated Spacing Aid | 控制器自动间距辅助 |
| CASA | Construcciones AeronÁuticas, S. A. | Construcciones AeronÁuticas, S. A. |
| CASA | Colorado Actors and Screenwriters Assembly | 科罗拉多州演员和编剧大会 |
| CASA | Churches Auxiliary for Social Action (New Delhi, India) | 社会行动辅助教堂（印度新德里） |
| CASA | Construcciones Aeronauticas Sociedad AÓnima (Spanish aerospace company and member of Airbus Industrie) | Construcciones Aeronauticas Sociedad AÓnima (Spanish aerospace company and member of Airbus Industrie) |
| CASA | Computer Are Social Actors | 计算机是社会行动者 |
| CASA | Center for the Adolescents of San Miguel de Allende (Mexico) | 圣米格尔·德·阿连德青少年中心（墨西哥） |
| CASA | Coordinator for Army Security Assistance | 陆军安全援助协调员 |
| CASA | Centre Against Sexual Assault | 反性侵中心 |
| CASA | Compact Annular-Slot Antenna | 紧凑型环形缝隙天线 |
| CASA | Civilian Aide to the Secretary of the Army | 陆军部长的文职助手 |
| CASA | Castillo de San Marcos National Monument (US National Park Service) | 圣马科斯城堡国家纪念碑（美国国家公园管理局） |
| CASA | Corporacion de Abastecimiento y Servicios Agricolas (Spanish, Venezuela) | Abastecimiento y Servicios Agricolas公司（西班牙语，委内瑞拉） |
| CASA | National Center on Addiction and Substance Abuse at Columbia University | 哥伦比亚大学国家成瘾和药物滥用中心 |
| CASA | Center for Advising and Student Achievement | 咨询和学生成就中心 |
| CASA | Christians Against Sinful Actions | 基督徒反对犯罪行为 |
| CASA | Mexican Restaurants | 墨西哥餐厅 |
| CASA | Comprehensive Approach To Student Achievement | 学生成就的综合方法 |
| CASA | Citizens Assessment Of Structural Adjustment | 结构调整的公民评估 |
| CASA | Cost Analysis Strategy Assessment | 成本分析策略评估 |
| CASA | Chinese Art Society of America | 美国中国艺术学会 |
| CASA | Community Alternative Systems Agency | 社区替代系统机构 |
| CASA | Council Of Appellate Staff Attorneys | 上诉律师委员会 |
| CASA | Computer Assisted Semen Analyzers | 计算机辅助精液分析仪 |
| CASA | Commerce and Administration Students Association | 工商管理学生会 |
| CASA | Cisco Appliance and Services Architecture | Cisco设备和服务体系结构 |
| CASA | Cosecheros, Abastecedores, Sociedad AnÓnima | Cosecheros, Abastecedores, Sociedad AnÓnima |
| CASA | Computer Aided Social Activity | 计算机辅助社会活动 |
| CASA | Clinic Assessment Software Application | 临床评估软件应用 |
| CASA | Community After School Academies | 社区课后学院 |