| RFPIO, Inc. | Oregon |
| RFPMonkey.com, LLC | Arizona |
| RFTB | |
| RFX, Inc. | California |
| RG Creative, LLC | |
| RG Net, Inc. | New York |
| RG Pacific, LLC | |
| RG2 Solutions, Inc. | Oklahoma |
| RGB Internet Systems, Inc. | |
| RGB Spectrum | California |
| RGB World, Inc. | Wisconsin |
| Rgenta Therapeutics | |
| RGI Creative | |
| RGI, Inc. | Ohio |
| RGNext | |
| RGo Robotics, Inc. | Massachusetts |
| RGS Marketing Group | |
| RH Perry & Associates | |
| Rhaeos, Inc. | Illinois |
| Rhapsody | Massachusetts |
| Rhapsody Venture Partners | |
| Rhausler, Inc. | California |
| RHB Technology Solutions | Wisconsin |
| rHEALTH | Massachusetts |
| Rheaply | |
| Rheonix, Inc. | New York |
| RheoSense, Inc. | |
| Rheoxtech, Inc. | |
| RheumaGen | |
| Rheumatology Associates of Northern Alabama | Alabama |
| Rhino | |
| Rhino Research | New York |
| Rhino Security Labs, Inc. | |
| Rhino Support, LLC | |
| Rhino Web Group, LLC | California |
| RhinoCorps Ltd | New Mexico |
| RhinoDox | |
| Rhinostics, Inc. | |
| Rho | New York |
| Rho Acceleration | |
| Rho Capital Partners | New York |
| Rho Protocol | |
| Rho, Inc. | North Carolina |
| Rhoads Creative, Inc. | Pennsylvania |
| Rhoads Online Institute | |
| Rhode Island College | Rhode Island |
| Rhode Island Geographic Information System | Rhode Island |
| RhodeCode, Inc. | California |
| Rhodes College Computer Science | Tennessee |
| Rhodes College Mathematics and Statistics | Tennessee |