| ICA | International Commission on Acoustics | 国际声学委员会 |
| ICA | Industrial Communication Association | 工业通信协会 |
| ICA | International Cartographic Association | 国际制图协会 |
| ICA | Institute of Chartered Accountants | 特许会计师公会 |
| ICA | International Communication Association | 国际通信协会 |
| ICA | International Cooperative Administration | 国际合作总署 |
| ICA | Independent Component Analysis | 独立分量分析 |
| ICA | Islet Cell Autoantibody | 胰岛细胞自体抗体 |
| ICA | Instrument Compressed Air | 仪表压缩空气 |
| ICA | International Colored Gemstone Association | 国际有色宝石协会 |
| ICA | Iranian Corrosion Association | 伊朗腐蚀协会 |
| ICA | Iranian Chemists' Association | 伊朗的化学家协会 |
| ICA | Idaho Cattle Association | 爱达荷牛协会 |
| ICA | International Communications Association (telecommunications end-user organization) | 国际通信协会（电信终端用户组织） |
| ICA | International Computer Association | 国际计算机协会 |
| ICA | Iowa Cattlemen's Association | 爱荷华州养牛业者协会 |
| ICA | Irish Countrywomen's Association | 爱尔兰Countrywomen的协会 |
| ICA | International Cooperative Association | 国际合作社协会 |
| ICA | International Confectionery Association | 国际糖果协会 |
| ICA | Industrial Communications Association | 工业通信协会 |
| ICA | International Claims Association | 国际索赔协会 |
| ICA | Iowa Coursing Association | 爱荷华州Coursing协会 |
| ICA | International Carwash Association | 国际洗车协会 |
| ICA | San Francisco Industrial Claims Association | 旧金山工业索赔协会 |
| ICA | Illinois Cosmetology Association, Inc. | 伊利诺伊州美容协会。 |
| ICA | Interbank Card Association | 银行卡协会 |
| ICA | International Chiropractors Association | 国际脊椎医师协会 |
| ICA | Interstitial Cystitis Association | 间质性膀胱炎协会 |
| ICA | Irish Curling Association | 爱尔兰冰壶协会 |
| ICA | Industrial Claims Association | 工业索赔协会 |
| ICA | Inter-Cultural Association of Greater Victoria (Canada) | 大维多利亚州跨文化协会（加拿大） |
| ICA | International Cancer Alliance | 国际癌症联盟 |
| ICA | Industrial Commission of Arizona | 亚利桑那州工业委员会 |
| ICA | Instructions for Continued Airworthiness | 持续适航说明 |
| ICA | Independent Cost Analysis | 独立成本分析 |
| ICA | International Cooperative Alliance (United Kingdom) | 国际合作社联盟（联合王国） |
| ICA | Institute of Company Accountants | 公司会计师学会 |
| ICA | International Cogeneration Alliance | 国际热电联产联盟 |
| ICA | Internal Carotid Artery | 颈内动脉 |
| ICA | International Chess Academy | 国际棋院 |
| ICA | Integrated Communications Architecture | 综合通信架构 |
| ICA | International Communications Agency | 国际通信局 |
| ICA | Institute of Classical Archeology | 古典考古学研究所 |
| ICA | Isocupressic Acid | 异铜辛酸 |
| ICA | Intelligent Communications Adapter | 智能通信适配器 |
| ICA | Islamic Center of Alaska, Inc. | 阿拉斯加伊斯兰中心公司。 |
| ICA | Intelligent Console Architecture | 智能控制台架构 |
| ICA | Infrastructure Corporation of America (Brentwood, TN) | 美国基础设施公司（田纳西州布伦特伍德） |
| ICA | Intra-Application Communications Area | 内部应用通信区 |
| ICA | International Contract Agency (Hitman game) | 国际合同代理（Hitman游戏） |
| ICA | International Coach Academy | 国际教练学院 |
| ICA | Inhaled AntiCholinergic | 吸入抗胆碱药 |
| ICA | Intercountry Adoption | 跨国领养约章 |
| ICA | Interleaved Channel Assignment | 交错信道分配 |
| ICA | Intelligent Channel Assignment | 智能通道分配 |
| ICA | In-Course Assessment | 课程内评估 |
| ICA | Internal Control Administrator | 内部控制管理员 |
| ICA | Interactive Convergence Algorithm | 交互式收敛算法 |
| ICA | Independent Cost Assessment | 单独成本估计 |
| ICA | Instrumentation, Control and Automation | 仪表、控制和自动化 |
| ICA | Insurance Consulting Associates | 保险咨询公司 |
| ICA | Inköpscentralerna Aktiebolag | Inköpscentralerna Aktiebolag |
| ICA | International Candlepin Alliance | 国际烛台联盟 |
| ICA | Instituto Colombiano Agropecuario (Colombia) | 哥伦比亚农业研究所（哥伦比亚） |
| ICA | Immigration and Checkpoints Authority (Singapore) | 移民和检查站管理局（新加坡） |
| ICA | Integrated Computing Architecture | 集成计算体系结构 |
| ICA | Internal Cerebral Artery | 大脑内动脉 |
| ICA | Independent Computing Architecture (Citrix) | 独立计算体系结构（Citrix） |
| ICA | Internet Commerce Appliance (Ipivot) | 互联网商务设备（Ipivot） |
| ICA | International Congress of Andrology | 国际男科大会 |
| ICA | Independent Component Analysis (signal processing) | 独立分量分析（信号处理） |
| ICA | International Council for Information Technology in Government Administration | 国际政府管理信息技术理事会 |
| ICA | International Council for Aquaculture (Philippines) | 国际水产养殖理事会（菲律宾） |
| ICA | Information Connection Architecture (SGI) | 信息连接体系结构（SGI） |
| ICA | Irreversible Corrective Action | 不可逆纠正措施 |
| ICA | Independent Carriers Alliance | 独立运营商联盟 |
| ICA | Interface Connector Assembly | 接口连接器组件 |
| ICA | Interuniversity Consortium for Agricultural and Related Sciences in Europe | 欧洲农业和相关科学大学间联合会 |
| ICA | Institute of Cultural Affairs | 文化事务研究所 |
| ICA | International Council on Archives | 国际档案理事会 |
| ICA | Invalid Care Allowance (UK) | 无效护理津贴（英国） |
| ICA | Institute for Connectivity in the Americas | 美洲互联互通研究所 |
| ICA | Internet Caching Appliance (IBM) | Internet缓存设备（IBM） |
| ICA | Independent Contractor Agent (insurance) | 独立承包商代理人（保险） |
| ICA | Isletcell Cytoplasm Autoantibody | 胰岛细胞胞浆自身抗体 |
| ICA | Isolated Code Announcement | 独立代码公告 |
| ICA | Interagency Cooperative Agreement | 机构间合作协议 |
| ICA | Independent Charities of America | 美国独立慈善机构 |
| ICA | Institute of Contemporary Arts (London, UK) | 当代艺术学院（英国伦敦） |
| ICA | International Christian Academy (BouakÉ, Cote d'Ivoire) | International Christian Academy (BouakÉ, Cote d'Ivoire) |
| ICA | Internet Checksum Algorithm | Internet校验和算法 |
| ICA | Institute of Contemporary Art (various locations) | 当代艺术学院（不同地点） |
| ICA | Independent Communications & Alarm, Inc. | 独立的沟通报警,公司 |
| ICA | Ingenieros Civiles Asociados (MÉxico) | Ingenieros Civiles Asociados (MÉxico) |
| ICA | Ignition Control Additive (former Shell gasoline additive) | 点火控制添加剂（原壳牌汽油添加剂） |
| ICA | Immaculate Concepcion Academy | 无瑕受孕学院 |
| ICA | Integrated Chameleon Architecture (SGML) | 集成变色龙架构（SGML） |
| ICA | Investment Company of America | 美国投资公司 |
| ICA | Intercompany Agreement | 公司间协议 |
| ICA | Information Communication Architecture | 信息通信架构 |