| CellTech Power | Westboro, Massachusetts, United States |
| Cellular Process Chemistry Inc. | Cambridge, Massachusetts, United States |
| Cengent Therapeutics Inc. | San Diego, California, United States |
| CENIDE - Center for Nanointegration Duisburg-Essen | Forsthausweg 2, Germany |
| CeNTech GmbH | Muenster, Germany |
| Center for Biological and Environmental Nanotechnology | Houston, Texas, United States |
| Center for High-rate Nanomanufacturing | Boston, Massachusetts, United States |
| Center for Houston’s Future | Houston, Texas, United States |
| Center for Integrated Nanotechnologies | Albuquerque, New Mexico, United States |
| Center for Integrated Nanotechnologies at Sandia National Laboratories and Los Alamos National Labor | Albuquerque, New Mexico, United States |
