| QwickLoad | Oklahoma |
| Qwiet | California |
| QwikLeaf, Inc. | California |
| Qwilt | California |
| Qwizdom | Washington |
| Qwknet, LLC | Idaho |
| QX Networking & Design, Inc. | Kentucky |
| Qx Therapeutics, Inc. | |
| Qypsys | Florida |
| R & D Industries, Inc. | Iowa |
| R & R Services and Repairs, Inc. | Florida |
| R & R Staffing, Inc. | California |
| R & R Web Design, LLC | |
| R and S Computers, Inc. | New York |
| R Douglas Briggs, Inc. | Colorado |
| R Squared Print and Web Design | Arizona |
| R Systems | California |
| R Systems NA, Inc. | Illinois |
| R T Software Service, Inc. | North Carolina |
| R Wireless | New Jersey |
| R&B Communications, Inc. | |
| R&B Electronics | Maine |
| R&D Altanova | New Jersey |
| R&D Computers, Inc. | Georgia |
| R&D Data Products | Illinois |
| R&D Logic, Inc. | California |
| R&D Systems, Inc. | Minnesota |
| R&D Technologies, Inc. | Rhode Island |
| R&J Technology, Inc. | California |
| R+B Sten-Tel | Pennsylvania |
| R-HUB Communications, Inc. | California |
| R-Pharm US, LLC | New Jersey |
| R-Squared Computing, Inc. | Florida |
| R-Tech | California |
| R. L. Martin & Associates, Inc. | Colorado |
| R. M. Baldwin, Inc. | Michigan |
| R.A. Cassel and Associates | Florida |
| R.A. Rodriguez & Associates, Inc. | Texas |
| R.B. Zack & Associates, Inc. | California |
| R.C. Electronics, Inc. | Montana |
| R.Dorsey+Company | Ohio |
| R.G. Sound & Communications, Inc. | Ohio |
| R.L. Wolff & Associates | |
| R.O. Writer | Florida |
| R.P.M. WebWorx | Pennsylvania |
| R.R. Donnelley & Sons Company | Illinois |
| R.S. Pressman & Associates, Inc. | Florida |
| R/GA | New York |
| R/GA Ventures | New York |
| R00t Computing, LLC | Indiana |