| Company | Location |
|---|---|
| Color Kinetics Inc. | Boston, Massachusetts, United States |
| Colorado Nanotechnology Alliance | Boulder, Colorado, United States |
| Colossal Storage Corp. | Fremont, California, United States |
| Columbia University | New York, New York, United States |
| Columbia University - Brus Group Labs | New York, New York, United States |
| Columbia University - Mechanical Engineering | New York, New York, United States |
| Columbia University - Microbiology | New York, New York, United States |
| Columbia University - Nanoscale Science and Engineering Center | New York, New York, United States |
| ColVisTec | Berlin - Aldershof, Germany |
| Comar Chemicals | Dassenberg, South Africa |
