| Abbreviation | Definition |
|---|---|
| UTP | Universal Transport Packet |
| UTS | Univac Terminal System |
| UU | Unix To Unix |
| UUCP | Unix to Unix Communication Protocol |
| UUNET | Unix to Unix Network |
| UUX | Unit-to- Unix transfer |
| UWB | Ultra Wde-Band |
| UWN | University Wide Network |
| UWN | Unrestricted Word Network |
| UXM | Universal Switching Module |
| UXZ | Unofficial Exchange Zone |
| VACL | VLAN (Virtual Local Area Network) Access Control List |
| VACM | View-Based Access Control Model |
| VAD | Voice Activity Detection |
| VADS | Vignette Advanced Deployment Server |
| VAE | Vision Alignment and Execution |
| VAE | Visual Art Exchange |
| VAE | Vocal Art Ensemble |
| VAF | Visual Arts Facility |
| VAF | Voluntary Appeal File |