ZEN
| Acronym | Definition |
|---|---|
| ZEN | Zero Effort Networking |
| ZEN | Zero Effort NAC (Network Access Control; software) |
| ZEN | Zona Espansione Nord (Italian: North Expansion Area; neighborhood) |
| ZEN | Zero Energy Neighborhood |
| ZEN | Zero Effort Network |
| ZEN | Zero Engine Noise |
| ZEN | Zerflainian Enterprizes (Gaithersburg, Maryland) |
| ZEN | Zoological Education Network Inc. (pet care) |