CCDU
| Acronym | Definition |
|---|---|
| CCDU | Claremont Colleges Debate Union (est. 1953; California) |
| CCDU | Corpus Christi Ducks Unlimited (Corpus Christi, TX) |
| CCDU | Coastal Command Development Unit (UK) |
| CCDU | Color-Coded Doppler Ultrasonography |
| CCDU | Color-Coded Doppler Ultrasound |