CDDT
| Acronym | Definition |
|---|---|
| CDDT | Count Down Demonstration Test |
| CDDT | Countdown Demonstration Test (NASA) |
| CDDT | Create Direct Deposit Tape |
| CDDT | cyclododecatriene |
| CDDT | Common Display Development Team |
| CDDT | Custom Debian Distributions Toolkit |
| CDDT | Conisbrough and Denaby Development Trust (UK) |