| Abbreviation | Definition |
|---|---|
| USWC | United States Warranty Corp |
| USWC | United States Warranty Corporation |
| USWDH | US Website Design and Hosting |
| USWM | U.S. Western Multitech, Inc. |
| USWT | U. S. WEST TECHNOLOGIES, Inc. |
| USX | Marathon Oil Corporation and United States Steel merged corporation |
| USX/S | United States Excess & Surplus Lines Insurance Agency, Inc. |
| UT | Unique Toys |
| UTA | U T A Telekom, A. G. |
| UTA | United Technology Associates |
| UTAC | Utility Truck Of America Corporation |
| UTB | United Trade Bureau |
| UTB | Universal Tractor Brasov |
| UTC | Under The Crown |
| UTC | Uniroyal Technology Corporation |
| UTC | United Technologies Corp |
| UTC | United Technologies Corporation |
| UTC | United Transformer Corporation |
| UTD | Unavailable Tripod Directory |
| UTD | Unique Tactical Dreamteam |