| CSS | Customer Service and Support | 客户服务和支持 |
| CSS | Common Command Set | 通用指令集 |
| CSS | cytoskeleton system | 细胞骨架系统 |
| CSS | Cascading Style Sheets | 层叠样式表 |
| CSS | Content Scrambling System | 内容不规则加密 |
| CSS | Coupling Suspension System | 耦合悬吊减震系统 |
| CSS | Computer System Simulation | 计算机系统模拟 |
| CSS | Computer Sub System | 计算机子系统 |
| CSS | Computer Scheduling System | 计算机调度系统 |
| CSS | Communication Sub System | 通信子系统 |
| CSS | Common Support System | 公用支援系统 |
| CSS | Cell Site Switch | 信元位置转换 |
| CSS | Channel Signaling System | 信道信令系统 |
| CSS | Cast Semi-Steel | 钢性铸铁 |
| CSS | Conversational Software System | 会话式软件系统 |
| CSS | Community Service Society | 社区服务协会 |
| CSS | Comprehensive Smoke Study | 综合烟雾研究 |
| CSS | Commission on Secondary Schools | 中学委员会 |
| CSS | Crew Support Station | 机组支持站 |
| CSS | Computer Subsystem | 计算机子系统 |
| CSS | Cascading Style Sheet | 层叠样式表 |
| CSS | Communications Security Symposium | 通信安全研讨会 |
| CSS | Center for Seismic Studies | 地震研究中心 |
| CSS | Communications Support Shelter | 通信支持庇护所 |
| CSS | Corporate Security Solutions | 公司安全解决方案 |
| CSS | Cisco Security Specialist | Cisco安全专家 |
| CSS | Customer Switching System | 用户交换系统 |
| CSS | Characteristic Structures | 特征结构 |
| CSS | Common Services Subsystem | 公共服务子系统 |
| CSS | COMSEC Subordinate Switch | 通信安全从属交换机 |
| CSS | Commuter Student Services | 通勤学生服务 |
| CSS | Chicago, South Shore, and South Bend Railroad | 芝加哥、南岸和南弯铁路 |
| CSS | Colorado Silica Sand | 科罗拉多硅砂 |
| CSS | Cell Site Selection | 单元格站点选择 |
| CSS | Combat Service Support | 作战服务支持 |
| CSS | Child Safety Seats | 儿童安全座椅 |
| CSS | Confederate States Ship | 邦联船 |
| CSS | Client Support Service | 客户支持服务 |
| CSS | Cervical Spinal Stenosis | 颈椎管狭窄 |
| CSS | Communications Subsystem | 通信子系统 |
| CSS | Client Session Setup | 客户端会话设置 |
| CSS | comp.sys.sinclair (USENET newsgroup) | comp.sys公司。sinclair（USENET新闻组） |
| CSS | Customer Service Specialist | 客户服务专员 |
| CSS | Certificate of Special Studies (Harvard Extension School in administration and management) | 特殊学习证书（哈佛行政管理学院） |
| CSS | Cassini Stratospheric Sounder | 卡西尼平流层探测器 |
| CSS | Customer Service Series | 客户服务系列 |
| CSS | College of Social Studies (Wesleyan University) | 社会研究学院（卫斯理大学） |
| CSS | College of Social Sciences | 社会科学学院 |
| CSS | Content Service Switch(ing) | 内容服务交换机 |
| CSS | County Surveyors' Society (UK) | 县的社会测量(英国) |
| CSS | Currumbin State School (Gold Coast, Australia) | 库伦宾州立学校（澳大利亚黄金海岸） |
| CSS | Stigmatine Fathers and Brothers (religious order) | 污名化的父亲和兄弟（宗教秩序） |
| CSS | Communication Support Systems | 通信支持系统 |
| CSS | Comcast Sports Southeast/Charter Sports Southeast | 美国有线电视体育东南/宪章运动东南部 |
| CSS | College Success Skills | 大学成功技能 |
| CSS | Coded Switch Set | 编码开关组 |
| CSS | Counter-Strike: Source (gaming) | 反击：来源（游戏） |
| CSS | Cansei de Ser Sexy (Brazilian band) | Cansei de Ser Sexy（巴西乐队） |
| CSS | Central Superior Services of Pakistan | 巴基斯坦中央高级服务局 |
| CSS | Celtic Football Club (Scottish soccer club) | 凯尔特足球俱乐部（苏格兰足球俱乐部） |
| CSS | Catholic Secondary School (Canada) | 天主教中学（加拿大） |
| CSS | Centrale Sanitaire Suisse | 瑞士Sanitaire中心 |
| CSS | Control Stick Steering (NASA) | 控制杆转向（NASA） |
| CSS | Coolangatta Special School (Gold Coast, Australia) | Coolangatta特殊学校（澳大利亚黄金海岸） |
| CSS | Corn Stunt Spiroplasma | 玉米矮生螺旋体 |
| CSS | Core Software Server | 核心软件服务器 |
| CSS | Cyberspace Safety and Security (International Workshop) | 网络空间安全与安保（国际讲习班） |
| CSS | Customer Support System | 客户支持系统 |
| CSS | Content Security Suite | 内容安全套件 |
| CSS | Camille Saint-Saens (classical composer) | 卡米尔·圣桑（古典作曲家） |
| CSS | Can't Shoot Straight (gaming clan) | 不能直截了当的游戏族 |
| CSS | Chinese Surface To Surface | 中文表面到表面 |
| CSS | Communications Switching Systems | 通信交换系统 |
| CSS | Clinton State School (QLD, Australia) | 克林顿州立学校（澳大利亚昆士兰州） |
| CSS | Command Session Start (ITU-T) | 命令会话启动（ITU-T） |
| CSS | Continuous Surveillance Service | 连续监视勤务 |
| CSS | Chicago SouthShore and South Bend Railroad | 芝加哥南岸和南弯铁路 |
| CSS | Consomic Strain | Consomic菌株 |
| CSS | Coordinator Surface Search | 协调员表面搜索 |
| CSS | Checkpoint Security Supervisor | 检查点安全主管 |
| CSS | Communication Systems Security | 通信系统安全 |
| CSS | Contingency Support Staff | 应急支援参谋 |
| CSS | Curvature Scale Space | 曲率比例空间 |
| CSS | Contents Scramble System | 内容扰乱系统 |
| CSS | Collaborative Software System | 协作软件系统 |
| CSS | Charter Sports Southeast | 宪章体育东南 |
| CSS | Cryptography Support Services | 加密支持服务 |
| CSS | Connection-Successful Signal | 连接成功信号 |
| CSS | Corn Syrup Solids | 玉米糖浆固体 |
| CSS | Computer Service Support | 计算机服务支持 |
| CSS | Contractor Support Services | 承包商支持服务 |
| CSS | Channel SubSystem | 通道子系统 |
| CSS | Cross-Sectional Study | 横断面研究 |
| CSS | Conventional Serial Search | 常规串行搜索 |
| CSS | Center Support Structure | 中心支撑结构 |
| CSS | Containment Spray System | 安全壳喷淋系统 |
| CSS | Clothing Sales Store | 服装小卖部 |
| CSS | Cement Solidification System | 水泥固化系统 |
| CSS | Criticality Safety Specification | 临界安全规范 |
| CSS | Customer Service Site | 客户服务站点 |