ZDI
| Acronym | Definition |
|---|---|
| ZDI | Zero Day Initiative (3Com/Tippingpoint) |
| ZDI | Zero Day Initiative |
| ZDI | Zimbabwe Defence Industries |
| ZDI | Zamojska Dyrekcja Inwestycji (Polish: Zamosc Investment Management; Zamosc, Poland) |
| ZDI | Zilog Debug Interface (debugging software) |
| ZDI | Zentrale Dienste Informatik (German: Central Services Computer Science) |
| ZDI | Zamudio Data Information Systems (California) |
| ZDI | Zentralverband Deutscher Ingenieure eV (German: Central Association of German Engineers; Munich, Germany) |