| CWID | Campus-Wide ID (computer logon) | 校园ID（计算机登录） |
| CWID | Civil Works Integration Division (USACE) | 土木工程集成部（USACE） |
| CWID | Continuous Wave Identification (Morse code sent periodically by a radio to identify itself) | 连续波识别（无线电定期发送莫尔斯电码以识别自身） |
| CWID | Concern Wide ID | 关注范围ID |
| CWID | Catholic Women in Dialogue | 天主教妇女对话 |
| CWID | Coalition Warrior Interoperability Demonstration | 联盟战士互操作性演示 |