| OSS | Office of Space Science | 太空科学处 |
| OSS | Office of Strategic Services | 战略情报局 |
| OSS | Open Source Software | 开放程序代码软件 |
| OSS | operations support system | 运行支援系统 |
| OSS | Open Sound System | 开放声音系统 |
| OSS | Operations Support Services | 运营支持服务 |
| OSS | Occupant Sensing System | 乘员感应系统 |
| OSS | Optional State Supplementation | 可选状态补充 |
| OSS | Online Schedule System | 在线时间表系统 |
| OSS | Office of Space Systems | 空间系统处 |
| OSS | Operation Support System | 运营支持系统 |
| OSS | Office of Statistical Standards | 统计标准局 |
| OSS | On Site Service(s) | 现场服务 |
| OSS | Optical Surveillance System | 光学监控系统 |
| OSS | On-Board Support Software | 车载支持软件 |
| OSS | Operatore Socio Sanitario | 运营商社会卫生 |
| OSS | Overall System Sensitivity (radar) | 总体系统灵敏度（雷达） |
| OSS | Operations Support System(s) | 运营支持系统 |
| OSS | Output Shaft Speed Sensor (automotive) | 输出轴转速传感器（汽车） |
| OSS | Optical Sight System | 光学瞄准系统 |
| OSS | Open Sky System (Audi) | 开放天空系统（奥迪） |
| OSS | Office for Special Support (academic support for students with special needs) | 特殊支持办公室（为有特殊需要的学生提供学术支持） |
| OSS | Oh Shoot Situation (polite form) | 哦，拍摄场景（礼貌形式） |
| OSS | Objective Supply System | 目标供应系统 |
| OSS | Optics Support Structure | 光学支撑结构 |
| OSS | Office of Systems Support | 系统支持办公室 |
| OSS | Operational Support Summary | 运营支持摘要 |
| OSS | Ormeau State School (Gold Coast, Australia) | Ormeau州立学校（澳大利亚黄金海岸） |
| OSS | Operational Support System (THREAT) | 作战支持系统（THRAT） |
| OSS | Organizational Supply Support | 组织供应支持 |
| OSS | Optical Storage System | 光存储系统 |
| OSS | Office Support System | 办公室支持系统 |
| OSS | Operational Support Services | 运营支持服务 |
| OSS | Office of Student Services | 学生服务办公室 |
| OSS | Office of the Secretary of State | 国务卿办公室 |
| OSS | Ordinary Strength Steel | 普通强度钢 |
| OSS | Over-The-Shoulder Shot (video photograpy) | 肩上镜头（视频摄影） |
| OSS | Over Speed Sensor (railroad industry) | 超速传感器（铁路行业） |
| OSS | Office of Special Services | 特别事务办公室 |
| OSS | Operational Storage Site | 作战物资贮存场 |
| OSS | Office of Survey Systems | 测量系统办公室 |
| OSS | Operational Support Systems | 运营支持系统 |
| OSS | Open Source Systems | 开源系统 |
| OSS | Ontario Sire Stakes | 安大略省Sire桩 |
| OSS | Operating Systems Software | 操作系统软件 |
| OSS | Object Services Standard | 对象服务标准 |
| OSS | Other Stable Shareholders | 其他稳定股东 |
| OSS | Oh So Social | 哦，太社交了 |
| OSS | Ontario Secondary Schools | 安大略省中学 |
| OSS | Osh, Kyrgyzstan | 吉尔吉斯斯坦奥什 |
| OSS | Openly Stealable Source | 公开可窃取的来源 |
| OSS | Observing Simulation System | 观测模拟系统 |
| OSS | Operator Services System | 操作员服务系统 |
| OSS | Organex Software Services | Organex软件服务 |
| OSS | Open Source Solutions | 开源解决方案 |
| OSS | Search result (MS Office) | 搜索结果（MS Office） |
| OSS | Oracle Support Services | Oracle支持服务 |
| OSS | One Stop Shopping | 一站式购物 |
| OSS | Operational Support System | 运营支持系统 |
| OSS | Ocean Surveillance System | 海洋监测系统 |
| OSS | Outside Surface | 外表面 |
| OSS | Old Soft Shoe | 旧款软鞋 |
| OSS | Observatory of the Sahara and the Sahel | 撒哈拉和萨赫勒观测站 |
| OSS | Online Search Service | 在线搜索服务 |
| OSS | Operations Support Squadron | 作战支援中队 |
| OSS | OnDO SIP Server | OnDO SIP服务器 |
| OSS | Advanced Broadband Operational Support Systems | 先进的宽带运营支持系统 |
| OSS | Off Site Sales | 场外销售 |
| OSS | Oxenford State School (Gold Coast, Australia) | Oxenford州立学校（澳大利亚黄金海岸） |
| OSS | Open Sound System (Unix digital audio architecture) | 开放式音响系统（Unix数字音频架构） |
| OSS | OnSite Solutions | 现场解决方案 |
| OSS | Outside Storage | 外部存储 |
| OSS | Open System Solution | 开放系统解决方案 |
| OSS | Oifig SchrÚdÓir na ScannÁn (Film Censor's Office, Ireland) | Oifig SchrÚdÓir na ScannÁn (Film Censor's Office, Ireland) |
| OSS | Operational Services Switch | 运营服务交换机 |
| OSS | Online Service System (SAP) | 在线服务系统（SAP） |
| OSS | Object Service Standard (SEMI) | 对象服务标准（SEMI） |
| OSS | Ofte Stillede SpørgsmÅl (Danish: Frequently Asked Questions) | Ofte Stillede SpørgsmÅl (Danish: Frequently Asked Questions) |
| OSS | Optimizing SubSystem | 优化子系统 |
| OSS | Overt Surveillance System | 外部监控系统 |
| OSS | Operator Seat Switch | 操作员座椅开关 |
| OSS | Open Simulation System | 开放式仿真系统 |
| OSS | Operating System Switch | 操作系统开关 |
| OSS | Old School Soldiers | 老派士兵 |
| OSS | Open System Support | 开放系统支持 |
| OSS | Operation And Support System | 操作和支持系统 |
| OSS | Ossetic (linguistics) | 奥塞蒂语（语言学） |
| OSS | Office of Space Station (NASA) | 空间站办公室（NASA） |
| OSS | Ogrenci Secme Sinavi (Turkish university exam) | Ogenci Secme Sinavi（土耳其大学考试） |
| OSS | Output Sub System | 输出子系统 |
| OSS | over-shoulder strap | 肩带 |
| OSS | 1/2 pint(apothecary) | 1/2(药量)品脱 |
| OSS | osseous | 骨的 |
| OSS | Ossetic | 骨化的 |