| rbb Communications | |
| RBC Medical Innovations | Kansas |
| RBC Signals, LLC | |
| RBI Media | Georgia |
| rBIO | Texas |
| RBJ Software, Inc. | California |
| RBMSoftware | California |
| rbTechnologies, LLC | Vermont |
| RC McLean and Associates, Inc. | California |
| RC Systems, Inc. | Washington |
| RCB Industries, Inc. | Michigan |
| RCC Business IT | Michigan |
| RCC Web Media Agency | |
| RCCO | Texas |
| RCF Information Systems, Inc. | Ohio |
| RCG Global Services | New Jersey |
| RCH Solutions | Pennsylvania |
| Rchilli, Inc. | California |
| RCK Controls, Inc. | California |
| RCK Techiees, Inc. | |
| RCM Technology Group | Illinois |
| RCMS, Inc. | Florida |
| RCN Telecom Services, LLC | Virginia |
| RCO Systems, Inc. | North Carolina |
| RCorpDesign | |
| RCR Technology Corporation, Inc. | Indiana |
| RCR Wireless News | Texas |
| RCS | New York |
| RCS Consulting, Inc. | Vermont |
| rct AI | California |
| RD Technologies | New Jersey |
| RD WebWorks | Tennessee |
| RDA Corporation | Maryland |
| RDCS | Pennsylvania |
| rde Connectors & Cables, Inc. | Florida |
| RDF Software | Texas |
| RDI Intuitive Technical | Ohio |
| RDL Web Development, LLC | Massachusetts |
| RDR PR, LLC | |
| RDV Systems | |
| Re-Source Partners | Michigan |
| RE/Advantage | |
| Re/code | California |
| re:3D | Texas |
| Re:amaze | California |
| re:Members | |
| Re:tune | |
| REA, Inc. | |
| Reach Broadband | Texas |
| Reach Capital | California |