| UCA | Unified Compiler Architecture | 统一编译架构 |
| UCA | Upper Control Area | 高空管制区 |
| UCA | Uxbridge Conservation Association (Canada) | Uxbridge保护协会(加拿大) |
| UCA | United Cheerleading Association | 联合啦啦队协会 |
| UCA | Utah Chess Association | 犹他州国际象棋协会 |
| UCA | Uttarakhand Cultural Association, Canada | 加拿大北阿坎德文化协会 |
| UCA | University Cheerleaders Association | 大学啦啦队协会 |
| UCA | Utica, NY, USA - Oneida County (Airport Code) | 美国纽约州尤蒂卡-奥奈达县(机场代码) |
| UCA | Universal Cheerleaders Association | 环球啦啦队协会 |
| UCA | University Counselling Association | 大学咨询协会 |
| UCA | Unified Cryptologic Architecture (NSA) | 统一密码体系结构(NSA) |
| UCA | University of Central Arkansas | 中阿肯色大学 |
| UCA | Utility Communications Architecture | 公用设施通信架构 |
| UCA | Use Case Analysis | 用例分析 |
| UCA | Uniform Cost Accounting | 统一成本会计 |
| UCA | Upper Control Arm | 上控制臂 |
| UCA | Undefinitized Contract Action | 未定义的合同行为 |
| UCA | Undercover Agent | 密探 |
| UCA | Uniform Chart of Accounts | 统一会计科目表 |
| UCA | Universidad CatÓlica Argentina | Universidad CatÓlica Argentina |
| UCA | UniversitÀ degli Studi di Cagliari | UniversitÀ degli Studi di Cagliari |
| UCA | Undefinitized Contractual Action | 未定义的合同行为 |
| UCA | Undefinitized Contract Authorization | 未定义的合同授权 |
| UCA | Utah Code Annotated | 犹他州注释法规汇典 |
| UCA | Uniting Church in Australia | 澳大利亚联合教会 |
| UCA | Uganda Co-Operative Alliance Limited | 乌干达合作联盟有限公司 |
| UCA | Universidad de CÁdiz (Spain) | Universidad de CÁdiz (Spain) |
| UCA | Under Color Addition | 添加颜色不足 |
| UCA | Unified Corporate Authority | 统一企业管理局 |
| UCA | User Created Animal | 用户创建的动物 |
| UCA | Union Council Administration | 工会理事会管理 |
| UCA | Unenclosed Covered Area | 未封闭覆盖区域 |
| UCA | Utica, New York USA | 尤蒂卡,美国纽约 |
| UCA | United Canadian Alliance | 加拿大联合联盟 |
| UCA | UniÓn de Campesinos Asturianos | UniÓn de Campesinos Asturianos |
| UCA | Unauthorized Computer Access | 未经授权的计算机访问 |
| UCA | Under Chair Activities | 副主席活动 |
| UCA | Utility Communication Architecture | 公用设施通信架构 |
| UCA | University of Central Asia (Khorog, Tajikistan) | 中亚大学(塔吉克斯坦霍罗格) |
| UCA | United Cheerleaders of America | 美国啦啦队联合会 |
| UCA | University of Central Asia | 中亚大学 |
| UCA | Upper Close Auxiliary | 上部关闭辅助 |
| UCA | Unternehmer Consult Ag (Munich, Germany) | Unternehmer咨询公司(德国慕尼黑) |
| UCA | University of Central America | 中美洲大学 |
| UCA | Under Construction Always | 始终在施工中 |
| UCA | Unit Career Advisor | 单位职业顾问 |
| UCA | Unit Climate Assessment (USAF) | 单位气候评估(USAF) |
| UCA | Ultraclean Air | 超洁净空气 |
| UCA | Unsupported Credit Approval (UK) | 不支持的信贷批准(英国) |
| UCA | Uniform Circular Array | 统一圆形阵列 |
| UCA | User Computer Address | 用户计算机地址 |
| UCA | U-matic Cassette Application | U-matic盒式磁带应用 |
| UCA | ureterocolic anastomosis | 输尿管结肠吻合术 |
| UCA | Unpriced Contract Action (USACE) | 未定价合同行动(USACE) |
| UCA | united chemists' association | 药剂师联合会 |
| UCA | Universidad CentroAmericana JosÉ SimeÓn Cañas | Universidad CentroAmericana JosÉ SimeÓn Cañas |