| COSO | Church of Spiral Oak | 螺旋橡木教堂 |
| COSO | Combat Oriented Supply Operations (USAF) | 面向作战的补给作战（USAF） |
| COSO | Corporate South | 公司南部 |
| COSO | Council Of Student Organizations | 学生组织理事会 |
| COSO | Class of Service Override | 服务等级覆盖 |
| COSO | Commission Of Sponsoring Organizations | 赞助组织委员会 |
| COSO | Committee Of Sponsoring Organizations | 赞助组织委员会 |
| COSO | Committee of Sponsoring Organizations of the Treadway Commission | Treadway委员会赞助组织委员会 |