| Userworld, Inc. | Illinois |
| UserZoom | California |
| USExpress.net Internet Services | Tennessee |
| USGN, Inc. | Arizona |
| uShip, Inc. | |
| Ushur | California |
| USI Corporation | Illinois |
| USLSoftware | Rhode Island |
| USM Business Systems | |
| USmax Corporation | Maryland |
| USMILCOM, Inc. | California |
| USPCNET, LLC | Arizona |
| UST | California |
| USTAS Technologies, Inc. | Maryland |
| USTeleCenters | Massachusetts |
| USTelecom | District of Columbia |
| USTronics.com, Inc. | Virginia |
| uStudio, Inc. | Texas |
| USUL, Inc. | |
| USWeb | Nevada |
| USWired | California |
| UT Networks | California |
| UT Web Solutions | |
| Utah Broadband | Utah |
| Utah Computer Society | Utah |
| Utah Education Network | |
| Utah Java Users Group | Utah |
| Utah Medical Products, Inc. | Utah |
| Utah Micro | Utah |
| Utah PHP Usergroup | Utah |
| Utah Python User Group | Utah |
| Utah SEO Pros | |
| Utah State University Department of Mathematics and Statistics | Utah |
| Utah State University Electrical and Computer Engineering Department | Utah |
| Utah State University Shool of Computing | Utah |
| Utah State University Space Dynamics Laboratory | Utah |
| Utah Tech Labs | Utah |
| Utah Tech University | Utah |
| Utah Tech University Computing Department | Utah |
| Utah Valley University | Utah |
| UTAK Laboratories | California |
| UTC Retail | New York |
| UTDesign Makerspace | Texas |
| UTECH, Inc. | Illinois |
| Utegration, LLC | Texas |
| uTest | Massachusetts |
| UTF-Labs | District of Columbia |
| Uthana | |
| Utica College | New York |
| Utila | |