| Company | Location |
|---|---|
| Critical Cleaning | Pownal, Vermont, United States |
| Crocus Technology | Santa Clara, California, United States |
| Crossbow Technology Inc. | San Jose, California, United States |
| Crystallume | Santa Clara, California, United States |
| Crystalplex Corp. | Pittsburgh, Pennsylvania, United States |
| CSIRO | Parkville, Victoria, Australia |
| CSIRO Nanotechnology Centre | Sydney, New South Wales, Australia |
| CTC Nanotechnology GmbH | Merzig, Germany |
| CTRL Systems Inc. | Westminster, Maryland, United States |
| Cube Optics AG | Mainz, Germany |
