DDX
| Acronym | Definition |
|---|---|
| DDX | Differential Diagnosis |
| DDX | Device Dependent X |
| DDX | Display Dispatch Message |
| DDX | Distributed Data Exchange |
| DDX | Digital Dental Exchange (software) |
| DDX | Dialog Data Exchange |
| DDX | Device Dependent X (computing) |
| DDX | Direct Digital Amplification |
| DDX | Doctors and Dentists Exemption (regulatory scheme; UK) |
| DDX | Destroyer, Experimental (US Navy next generation ship) |