| MSS | Multiple Sclerosis Society | 多发性硬化症学会 |
| MSS | Maximum Segment Size | 最大报文段长度 |
| MSS | Mass storage system | 海量存储系统 |
| MSS | Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. (also seen as MSSVF) | 阀门和配件行业制造商标准化协会（也称为MSSVF） |
| MSS | Medical Student Society | 医学生协会 |
| MSS | Memphis Soaring Society (aviation) | 孟菲斯翱翔协会（航空） |
| MSS | Manufacturers Standardization Society | 制造商标准化协会 |
| MSS | Massena, NY, USA (Airport Code) | 美国纽约州马塞纳（机场代码） |
| MSS | Minimum Service Standards | 最低服务标准 |
| MSS | Mission Systems Sector | 任务系统部门 |
| MSS | Mississippi Space Service | 密西西比航天局 |
| MSS | Manuscripts | 手稿 |
| MSS | Meteorological Sounding Systems | 气象探测系统 |
| MSS | Ministry of State Security (Chinese counterintelligence organization) | 国家安全部（中国反间谍组织） |
| MSS | Master of Space Studies | 空间研究硕士 |
| MSS | Mission Scheduling System (NASA) | 任务调度系统（NASA） |
| MSS | Monash Science Society (Monash University, Australia) | 莫纳什科学学会（澳大利亚莫纳什大学） |
| MSS | Meterological Satellite System | 气象卫星系统 |
| MSS | meteorological satellite subsystem (US DoD) | 气象卫星子系统（美国国防部） |
| MSS | Master-Slave Synchronization | 主从同步 |
| MSS | Multimedia Synchronization Server (Empirix) | 多媒体同步服务器（Empirix） |
| MSS | Maritime Satellite Service | 海事卫星服务 |
| MSS | Mainzer Studienstufe | Mainzer Studienstufe公司 |
| MSS | Matrix Switch System | 矩阵开关系统 |
| MSS | Mission Support Squadron | 任务支援中队 |
| MSS | Middle Stage Switch | 中间级开关 |
| MSS | Mudgeeraba State School (Gold Coast, Australia) | Mudgeeraba州立学校（澳大利亚黄金海岸） |
| MSS | MAN Switching System (Seimens/Stromberg Carlson) | 男人Seimens / Stromberg切换系统(分部) |
| MSS | Multispectral Scanner System | 多光谱扫描仪系统 |
| MSS | Mobile Servicing Station (space station) | 移动维修站（空间站） |
| MSS | Minesweeper, Special (Device) | 特殊扫雷器（装置） |
| MSS | Manufacturing Services Sector | 制造服务业 |
| MSS | Muscle Signs and Symptoms | 肌肉症状和体征 |
| MSS | Military Supply Standards | 军事供应标准 |
| MSS | Maintenance Service Supplier | 维护服务供应商 |
| MSS | Mechanical and Structural Subsystems | 机械和结构子系统 |
| MSS | Mobile Servicing System | 移动维修系统 |
| MSS | Microsoft Sales Specialist | Microsoft销售专家 |
| MSS | Millimeter Simulation System | 毫米模拟系统 |
| MSS | Mine Search System | 地雷搜索系统 |
| MSS | Master of Social Science | 社会科学硕士 |
| MSS | Magnetostrictive Sensor | 磁致伸缩传感器 |
| MSS | Multiprotocol Switched Services (IBM) | 多协议交换服务（IBM） |
| MSS | Maximum Soil Slope | 最大土壤坡度 |
| MSS | Missile Security Squadron | 导弹安全中队 |
| MSS | Ministry of Social Services (replaced by Ministry of Human Resources and Social Development, Canada) | 社会服务部（由加拿大人力资源和社会发展部取代） |
| MSS | Metropolitan Switching System | 城域交换系统 |
| MSS | M.S. Swaminathan (Indian agricultural scientist) | M、 S.Swaminathan（印度农业科学家） |
| MSS | Management System Standard | 管理体系标准 |
| MSS | Maximum Segment Size (TCP/IP) | 规模最大的片段(TCP / IP) |
| MSS | Missile Surface-to-Surface | 导弹地对地 |
| MSS | Merit System Services | 优异系统服务 |
| MSS | Maximum Signal Strength | 最大信号强度 |
| MSS | Motion Sensing System | 运动传感系统 |
| MSS | Multi-Spectral Scanner | 多光谱扫描仪 |
| MSS | McKeesport Symphony Society (McKeesport, Pennsylvania) | 麦基斯波特交响乐团（宾夕法尼亚州麦基斯波特） |
| MSS | Mobile Support System | 移动支持系统 |
| MSS | Military Sensing Symposia | 军事传感研讨会 |
| MSS | Missile System Supervisor | 导弹系统主管 |
| MSS | Maintenance, Start-Up, and Shutdown (Texas Commission on Environemental Quality) | 维护、启动和关闭（德克萨斯州环境质量委员会） |
| MSS | Merrimac State School (Gold Coast, Australia) | 梅里马克州立学校（澳大利亚黄金海岸） |
| MSS | Medical Service Specialist (USAF) | 医疗服务专家（USAF） |
| MSS | Master of Strategic Studies | 战略研究硕士 |
| MSS | Mechanical Systems Simulation | 机械系统仿真 |
| MSS | Marinesco-Sjogren Syndrome | Marinesco干燥综合征 |
| MSS | Message Switching System | 信息交换系统 |
| MSS | Mission Support System | 任务支援系统 |
| MSS | Main Shaft Speed | 主轴速度 |
| MSS | Management Support System | 管理支持系统 |
| MSS | Measurement and Stimulus Subsystem | 测量和刺激子系统 |
| MSS | Maintenance Subsystem | 维护子系统 |
| MSS | Mechanically Separated Species | 机械分离物种 |
| MSS | Management Statistics Subsystem | 管理统计子系统 |
| MSS | Maternal Serum Screening | 母体血清筛查 |
| MSS | Mission Support Site (US military special forces) | 任务支持点（美国军事特种部队） |
| MSS | Mohammed Saeed al-Sahaf (former Iraqi Minister of Information) | 穆罕默德·赛义德·萨哈夫（伊拉克前新闻部长） |
| MSS | Modular Space Station | 模块化空间站 |
| MSS | Maxtor Shared Storage | Maxtor共享存储 |
| MSS | Microprocessor System Status | 微处理器系统状态 |
| MSS | Magnetic Sensing System | 磁感应系统 |
| MSS | Mobile Service Structure | 移动服务结构 |
| MSS | Marine Safety and Security | 海上安全和安保 |
| MSS | Mobility Services Suite (Symbol Technologies) | 移动服务套件（符号技术） |
| MSS | Manav Sthali School (New Delhi, India) | Manav Sthali学校（印度新德里） |
| MSS | Mudgeeraba Special School (Gold Coast, Australia) | Mudgeeraba特殊学校（澳大利亚黄金海岸） |
| MSS | Mobile Satellite Services | 移动卫星服务 |
| MSS | Medical Support Services | 医疗支持服务 |
| MSS | Midwest Sociological Society | 中西部社会学学会 |
| MSS | Miami State School (Gold Coast, Australia) | 迈阿密州立学校（澳大利亚黄金海岸） |
| MSS | Montfort Secondary School | 蒙福特中学 |
| MSS | Moored/Mobile Surveillance System | 监视系统。/停泊 |
| MSS | Maximum-Shear-Stress Theory (mechanical engineering) | 最大剪应力理论（机械工程） |
| MSS | Managed Security Services (information security) | 托管安全服务（信息安全） |
| MSS | Mobile Support Station | 移动支持站 |
| MSS | Master of Social Service (degree) | 社会服务硕士（学位） |
| MSS | Major Shore Spares | 主要岸上备件 |
| MSS | Mobile Switching Station | 移动交换站 |
| MSS | Market Share System (US Army recruiting) | 市场份额系统（美国陆军招募） |
| MSS | Mormon Scripture Studies | 摩门教圣经研究 |
| MSS | Materials Science in Space | 空间材料科学 |