| LCOS | Liquid Crystal On Silicon | 硅上液晶 |
| LCOS | Line Class Of Service | 线路业务等级 |
| LCOS | Liquid-Crystal-on-Silicon (display technology) | 硅基液晶（显示技术） |
| LCOS | Low Cardiac Output Syndrome | 低心输出量综合征 |
| LCOS | Linear Combination of Order Statistics | 订单统计的线性组合 |
| LCOS | Limiting Conditions for Operations Specification | 操作规范的限制条件 |
| LCOS | Licensed Comercial Operating System | 许可商业操作系统 |
| LCOS | Lincoln County On-Stage | 林肯县上台 |
| LCOS | Lutheran Church of Our Savior | 我们救世主的路德教会 |
| LCOS | Lost Channel Observing Site | 失落航道观测点 |
| LCOS | London Conference on Overseas Students | 伦敦留学生会议 |
| LCOS | Lead Computing Optical Sight (military) | 领先计算光学瞄准镜（军用） |
| LCOS | Lycos, Inc. | Lycos公司。 |
| LCOS | Lycos, Inc. (stock symbol) | Lycos，Inc.（股票代码） |
| LCOS | Lead Computing Optical Sight | 领先计算光学瞄准镜 |