| LOSC | Letter Of Substantial Compliance | 实质合规函 |
| LOSC | Letter Of Security Cognizance | 担保确认书 |
| LOSC | Louisiana Office of State Climatology | 路易斯安那州气候局 |
| LOSC | Law of the Sea Convention | 海洋法公约 |
| LOSC | Linear Output Saturated Counter | 线性输出饱和计数器 |
| LOSC | Lille Olymlpique Sporting Club | 里尔奥林匹克体育俱乐部 |
| LOSC | Labour-Only Sub Contractor (UK) | 仅劳务分包商（英国） |
| LOSC | Launch Operations Support Contract | 启动运营支持合同 |