| CWDD | Continuous Wave Deuterium Demonstration | 连续波氘演示 |
| CWDD | Certified Web Designer and Developer (National IT Learning Centre; UK) | 认证网络设计师和开发人员（英国国家IT学习中心） |
| CWDD | Chemical Warfare Directional Detector | 化学战方向探测器 |
| CWDD | Children With Developmental Disabilities | 发育障碍儿童 |