| DCOS | DaimlerChrysler Overseas | 戴姆勒克莱斯勒海外 |
| DCOS | Deputy Chief Of Staff | 副参谋长 |
| DCOS | Differentiated Classroom Observation Scale | 差异化课堂观察量表 |
| DCOS | Dynamic Coalition on Open Standards (Internet Governance Forum) | 开放标准动态联盟（互联网治理论坛） |
| DCOS | Defense Computing Operations Support | 国防计算作战支持 |
| DCOS | Distribution Cost of Supply (model) | 供应配送成本（模型） |
| DCOS | Disney Channel Original Show | 迪斯尼频道原创节目 |