| COSS | Common Object Services Specifications | 公共对象服务规范 |
| COSS | Contracts and Other Support Services (Federal Acquisition Regulation) | 合同和其他支持服务（联邦采购条例） |
| COSS | Centaur Operations at the Space Station (NASA) | 空间站的半人马座操作（NASA） |
| COSS | Controller of Site Safety (UK railway engineering) | 现场安全总监（英国铁路工程） |
| COSS | Crew On-orbit Support Systems (NASA) | 乘员在轨支持系统（NASA） |
| COSS | Commander's OPSEC Support System | 指挥官的OPSEC支持系统 |
| COSS | Colorado Organization of Slalom Skateboarding | 科罗拉多州回转滑板组织 |
| COSS | Cooperative Osteosarcoma Study Group | 骨肉瘤合作研究组 |
| COSS | Consuls | 领事 |
| COSS | Certified Occupational Safety Specialist | 注册职业安全专家 |
| COSS | Commissioner of Social Security | 社会保障专员 |
| COSS | Carotid Occlusion Surgery Study | 颈动脉闭塞手术研究 |
| COSS | Co-Orbit Support Systems | 共轨支持系统 |
| COSS | Common Object Services Specification | 公物服务规范 |
| COSS | Contractor-Operated Storage Sites | 承包商经营的储存场地 |
| COSS | Customer Oriented Strategic System | 以客户为导向的战略体系 |
| COSS | Controller of Site Safety (Named supervisor of work gangs on UK railways) | 现场安全总监（英国铁路工作组指定主管） |
| COSS | Cross Operating System Service | 跨操作系统服务 |