| UroViu Corporation | California |
| URS Electronics, Inc. | Oregon |
| Ursa Major Technologies, Inc. | |
| Ursa Space Systems, Inc. | New York |
| UrsaLeo, Inc. | California |
| Ursinus College | Pennsylvania |
| URSoft, Inc. | Texas |
| URSROBOT, Inc. | |
| Ursuline College | Ohio |
| Urvas Ltd | Washington |
| US 1 Computer Works | Florida |
| US Air Tech | Arizona |
| US Biolab Corporation | |
| US Cellular | Illinois |
| US Dataworks, Inc. | Texas |
| US Digital | Washington |
| US Digital Media | Arizona |
| US Digital Partners, LLC | Ohio |
| US Internet | Minnesota |
| US Internet Technologies | Florida |
| US Logic | New Jersey |
| US Logon Internet Services | Ohio |
| US Market Access Center, Inc. | California |
| US Medical Innovations, LLC | Maryland |
| US Micro PC, Inc. | Washington |
| US Mobile | New York |
| US Net | Missouri |
| US Signal | Michigan |
| US Tech Solutions, Inc. | New Jersey |
| US Techland | New Jersey |
| US Tower Corporation | California |
| US Website Builder, LLC | California |
| US Wire | Wisconsin |
| US-Analytics | Texas |
| USA Conferencing | Virginia |
| USA Digital Communications, Inc. | Oklahoma |
| USA Domains | Tennessee |
| USA Firmware, LLC | Ohio |
| USA Marketing Associates | Massachusetts |
| USA Mathematical Talent Search | New York |
| USA People Search | |
| USA PhoneCenters | New Jersey |
| USA Today Technology News | District of Columbia |
| USA Web Design Experts | |
| USA Wire & Cable, Inc. | Texas |
| Usabal Solutions | |
| Usability Architects, Inc. | Washington |
| Usability First | Colorado |
| Usability Professionals' Association | Illinois |
| Usability Sciences | Texas |