| CFC Veranstaltungen GmbH | Braunschweig, Germany |
| CFD Research Corp. | Huntsville, Alabama, United States |
| CHA Industries | Fremont, California, United States |
| Chalmers University of Technology - Microtechnology Centre | Goteborg, Sweden |
| ChannelScience | Plano, Texas, United States |
| Charles Stark Draper Laboratory | Cambridge, Massachusetts, United States |
| Charmilles | Lincolnshire, Illinois, United States |
| Chartered Semiconductor Manufacturing | Singapore, Singapore |
| Cheap Tubes, Inc. | Brattleboro, Vermont, United States |
| Check-It Monitoring Solutions Inc. | Regina, Saskatchewan, Canada |