| SCA | Single Connector Attachment | SCA接头（80针） |
| SCA | Suply Chain Alliance | 供应链联盟 |
| SCA | Service Charge due Agent | 代理服务费 |
| SCA | Slag Cement Association | 矿渣水泥协会 |
| SCA | Society for Creative Anachronism, Inc. | 创意不合时代协会。 |
| SCA | Sickle Cell Association | 镰状细胞协会 |
| SCA | Scientific Computing Associates | 科学计算协会 |
| SCA | Swedish Concrete Association | 瑞典混凝土协会 |
| SCA | Student Council Association | 学生理事会协会 |
| SCA | Scottish Croquet Association | 苏格兰槌球协会 |
| SCA | Scottish Conjurers' Association (Glasgow, Scotland) | 苏格兰的魔术师协会(苏格兰格拉斯哥) |
| SCA | Society for Creative Acronyms | 创意首字母缩写协会 |
| SCA | Saint Charles Associates (St. Charles, Maryland) | 圣查尔斯协会（马里兰州圣查尔斯） |
| SCA | Societe en Commandite par Actions | 法国律师协会 |
| SCA | Student Conservation Association | 学生保护协会 |
| SCA | Seattle Counselors Association (Seattle, WA) | 西雅图顾问协会（华盛顿州西雅图） |
| SCA | Scottish Canoe Association (Edinburgh, Scotland) | 苏格兰独木舟协会（苏格兰爱丁堡） |
| SCA | Society of Core Analysts | 核心分析师协会 |
| SCA | Sprayed Concrete Association (UK) | 喷射混凝土协会（英国） |
| SCA | Society of Cardiovascular Anesthesiologists | 心血管麻醉医师协会 |
| SCA | Synchronous Clock Adjustment | 同步时钟调整 |
| SCA | Supply Chain Alliance | 供应链联盟 |
| SCA | Software Configuration Audit | 软件配置审核 |
| SCA | Single-Connector Attachment (SCSI) | 单连接器连接（SCSI） |
| SCA | Small Craft Advisory | 小艇咨询 |
| SCA | Smart Card Alliance | 智能卡联盟 |
| SCA | SociÉtÉ du CrÉdit Agricole du Canada (farm credit corporation) | SociÉtÉ du CrÉdit Agricole du Canada (farm credit corporation) |
| SCA | System Concept Analysis | 系统概念分析 |
| SCA | Service Cost Avoidance | 避免服务成本 |
| SCA | Security Control Agreement | 安全控制协议 |
| SCA | Space Coordinating Authority (Joint Force Military Operations) | 空间协调局（联合部队军事行动） |
| SCA | Subcontract Administrator | 分包管理员 |
| SCA | Sydney Catchment Authority (Australia) | 悉尼集水区管理局（澳大利亚） |
| SCA | Software Communications Architecture | 软件通信体系结构 |
| SCA | Service Component Architecture | 服务组件体系结构 |
| SCA | Short-Circuit Analysis | 短路分析 |
| SCA | Sickle Cell Anemia | 镰状细胞贫血 |
| SCA | Selective Call Acceptance | 选择性呼叫接受 |
| SCA | Superior Cerebellar Artery | 小脑上动脉 |
| SCA | Self-Complementary Antenna | 自互补天线 |
| SCA | Sudden Cardiac Arrest | 心脏骤停 |
| SCA | Specific Combining Ability | 特定配合力 |
| SCA | Single Channel Analyzer | 单通道分析仪 |
| SCA | Sexual Compulsives Anonymous | 匿名性强迫 |
| SCA | Summit Christian Academy (Yorktown, VA; incorporated in 1995) | Summit Christian Academy（弗吉尼亚州约克镇；1995年成立） |
| SCA | Show Cause Authority | 显示原因权限 |
| SCA | Sustainable Competitive Advantage | 可持续竞争优势 |
| SCA | Sneak Circuit Analysis | 潜行电路分析 |
| SCA | Single Cabinet ASOS (National Weather Service) | 单柜ASOS（国家气象局） |
| SCA | Silver Channel Administration | 白银渠道管理 |
| SCA | Secure Content Accelerator (Cisco) | 安全内容加速器（Cisco） |
| SCA | Saint Cecilia Academy (Pasig City, Metro Manila, Philippines) | 圣塞西莉亚学院（菲律宾马尼拉大都会帕西格市） |
| SCA | Single Case Agreement (insurance) | 单一案例协议（保险） |
| SCA | Supreme Council of Antiquities (Egypt) | 最高文物委员会（埃及） |
| SCA | Site Characterization Analysis | 场地特征分析 |
| SCA | Scientific Computer Applications, Inc (Tulsa, Oklahoma) | 科学计算机应用公司（俄克拉荷马州塔尔萨） |
| SCA | Swedish Committee for Afghanistan | 瑞典阿富汗委员会 |
| SCA | South Carolina Aquarium (Charleston, SC) | 南卡罗来纳水族馆（南卡罗来纳州查尔斯顿） |
| SCA | Samoyed Club of America | 美国萨摩耶俱乐部 |
| SCA | Shalom Christian Academy | Shalom基督教学院 |
| SCA | Specific Collecting Area (electrostatic precipitators; air pollution control) | 特定收集区域（静电除尘器；空气污染控制） |
| SCA | Service Contract Act | 服务合同法 |
| SCA | Service Center Agencies (USDA) | 服务中心机构（USDA） |
| SCA | Snow-Covered Area | 积雪覆盖区 |
| SCA | Social Compliance Auditor | 社会责任审核员 |
| SCA | Single Connector Architecture | 单连接器体系结构 |
| SCA | Self-Contained Approach | 自主式方法 |
| SCA | Side-Channel Analysis (cryptography) | 侧信道分析（密码学） |
| SCA | Square Contour Algorithm | 正方形轮廓算法 |
| SCA | Society for Commercial Archeology | 商业考古学会 |
| SCA | Structural Coverage Analysis (DO-178B Certification) | 结构覆盖分析（DO-178B认证） |
| SCA | Space Camp Andøya (Norway) | Space Camp Andøya (Norway) |
| SCA | SociÉtÉ Canadienne d'Agronomie (Canadian Society of Agronomy) | SociÉtÉ Canadienne d'Agronomie (Canadian Society of Agronomy) |
| SCA | Special Central Assistance (India) | 特别中央援助（印度） |
| SCA | Supply Chain Analyst | 供应链分析师 |
| SCA | Summary Cost Account | 汇总成本科目 |
| SCA | Satellite Control Authority | 卫星控制局 |
| SCA | Subcontract Award | 分包合同授予 |
| SCA | Software Corporation of America, Inc. | 美国软件公司。 |
| SCA | Shop Certification Authority (aviation) | 商店认证机构（航空） |
| SCA | Self-Controlled Airspace | 自主空域 |
| SCA | Service Cryptologic Agency | 服务加密机构 |
| SCA | Spacecraft Checkout Area (NASA) | 航天器检查区（NASA） |
| SCA | Spinocerebellar Ataxia | 脊柱小脑共济失调 |
| SCA | South Central Asia | 中南亚 |
| SCA | Sub-Channel Assignment | 子频道分配 |
| SCA | Standing Committee on Agriculture | 农业常设委员会 |
| SCA | Singapore Club Aquanaut | 新加坡游泳俱乐部 |
| SCA | Systems Configuration Administrator | 系统配置管理员 |
| SCA | Senescent Cell Antigen | 衰老细胞抗原 |
| SCA | Specification Compliance Agreement | 规范符合性协议 |
| SCA | Suez Canal Authority | 苏伊士运河管理局 |
| SCA | Surface Charge Analyzer | 表面电荷分析仪 |
| SCA | Shanghai Copyright Administration | 上海市版权局 |
| SCA | Status of Children Act | 《儿童地位法》 |
| SCA | Switchgear and Controlgear Assembly | 开关设备和控制设备组件 |
| SCA | Special Committee on Agriculture (EU) | 农业特别委员会（欧盟） |
| SCA | Societate in CÒmandita pe Actiuni (Romanian: limited joint stock companies) | Societate in CÒmandita pe Actiuni (Romanian: limited joint stock companies) |
| SCA | Subordinate Command Activity | 下属指挥活动 |