| Abbreviation | Definition |
|---|---|
| VNU | Vehicle Navigation Unit |
| VNV | Victory Not Vengeance |
| VNV | VietNam Veteran |
| VNZ | VietNam Zone |
| VO | Validation Office |
| VO | verbal order |
| VO | Verbal Orders |
| VOCC | Vessel Operating Common Carrier |
| VOCO | verbal order of the Commanding Officer |
| VOCODER | VOice EnCODER |
| VOCU | Voice Orderwire Control Unit |
| VOD | Vertical Onboard Delivery |
| VOG | The name of many Russian weapons systems, but mostly grenades shot from the under barrel of a rifle. |
| VOL | Volunteer |
| VOLS | Vertical Optical Landing System |
| VOQ | Visiting Officers Quarters |
| VOR | VHF (Very High Frequency) Omnidirectional Range |
| VOR | VHF omni-directional range |
| VORTAC | VHF (Very High Frequency) Omni-directional Range TACtical air navigation |
| VOTS | ariable Optical Target Simulator |