| Rosn.net | California |
| Ross Group, Inc. | Ohio |
| ROSS Intelligence, Inc. | |
| ROSS Intelligence, Inc. | |
| Ross Media Solutions, Inc. | |
| Rossi Technologies | North Carolina |
| Rossknecht Software | Colorado |
| Rossman Media | |
| Roster | |
| Roswell Biotechnologies, Inc. | California |
| Roswell NYC | |
| Rotating Precision Mechanisms, Inc. | |
| Roth Automation | |
| ROTH Capital Partners, LLC | California |
| Roto Group, LLC | |
| RotoQL | New York |
| Roubaix Capital, LLC | Colorado |
| Round The Clock Technologies | |
| Round Z Ventures | California |
| Roundbrix | |
| Rounded Digital, LLC | |
| Roundedcube, Inc. | Missouri |
| Roundhouse Agency | |
| Roundhouse Consulting, LLC | |
| Roundrok Technology | |
| RoundTable Healthcare Partners | Illinois |
| RoundTechSquare | |
| RoundUp App | |
| Rouse Consulting Group, Inc. | Illinois |
| RoushTech | |
| Routable, Inc. | California |
| Route | |
| Route 66 Ventures | Virginia |
| Route 92 Medical | California |
| Route4Me, Inc. | Florida |
| Routefusion | Texas |
| RouteMatch Software | Georgia |
| Router12 Networks, LLC | Iowa |
| Routes.Design | |
| Routific Solutions, Inc. | |
| Roux Advertising | |
| Rova Agency | |
| RoVan Media | |
| Rover Diagnostics | New York |
| Rover Labs, Inc. | |
| Rover Robotics, Inc. | |
| Rover, Inc. | California |
| RoviSys Company | Ohio |
| Rovix, Inc. | Georgia |
| Rovr, LLC | Arizona |