| Rite Technology | Florida |
| RITEC, Inc. | California |
| Ritesoft, LLC | Minnesota |
| Rithem Life Sciences | Delaware |
| Rithim Biologics, Inc. | Maryland |
| Rithm, Inc. | California |
| Rithum Holdings, Inc. | Georgia |
| RITRON, Inc. | Indiana |
| Rittenhouse Ventures, LLC | Pennsylvania |
| Riva Therapeutics | |
| Rival | |
| Rival IQ | Washington |
| RivalFlow, Inc. | |
| Rivalmind, LLC | |
| Rivanna Medical | Virginia |
| Rive, Inc. | California |
| Rivell | |
| Riven Design | North Dakota |
| River Capital | Georgia |
| River Capital Finance | Ohio |
| River Cities Capital Funds | Ohio |
| River Consulting | |
| River Coyote Design | California |
| River Financial, Inc. | |
| River Info | Arizona |
| River Internet Communications, Inc. | New Jersey |
| River Logic, Inc. | Texas |
| River Software | Ohio |
| River Software, LLC | |
| River Stone Biotech, Inc. | Delaware |
| River Valley Graphics | Maine |
| Rivera Consulting Group, Inc. | Indiana |
| Riverace Corporation | Massachusetts |
| Riverain Technologies | Ohio |
| Riverbed Technology | California |
| Riverbend Media Group | |
| Riverfront Ventures | Pennsylvania |
| RiverMeadow Software, Inc. | Massachusetts |
| Riveron | Texas |
| RiverPark Ventures | New York |
| Rivers Advertising | North Carolina |
| Rivers Agile | Pennsylvania |
| Riversand Technologies, Inc. | Texas |
| RiverShock Systems Ltd | Texas |
| Riverside Center for Innovation | Pennsylvania |
| Riverside City College | California |
| Riverside Computer Consultants | Maryland |
| Riverside Research | Virginia |
| RiverSoft | Florida |
| Riverstick Technology Partners, LLC | Texas |