| Company | Location |
|---|---|
| RD Automation | Londonderry, New Hampshire, United States |
| Reactive Nanotechnologies Inc. | Hunt Valley, Maryland, United States |
| Reade Advanced Materials | Providence, Rhode Island, United States |
| REALCO | Louvain-la-Neuve, Belgium |
| Really Tiny Stuff Inc. | Cohasset, Massachusetts, United States |
| Realtek Technologies Pty Ltd | Victoria, Australia |
| Redwood MicroSystems Inc. | Menlo Park, California, United States |
| Reflectivity Inc. | Sunnyvale, California, United States |
| Regal Event Services | Rochester, Michigan, United States |
| Regione Lombardia | Milano, Italy |
