| CEIM | Computing Environment Instant Messaging | 计算环境即时消息 |
| CEIM | ConfederaciÓn de Empresarios Independientes de Madrid | ConfederaciÓn de Empresarios Independientes de Madrid |
| CEIM | ConfederaciÓn Empresarial Independiente de Madrid (Spanish: Independent Business Confederation of Madrid Spain) | ConfederaciÓn Empresarial Independiente de Madrid (Spanish: Independent Business Confederation of Madrid Spain) |
| CEIM | Corps of Engineers Directorate of Information Management | 工程兵团信息管理局 |