| Cool-n-Save | Huntington Beach, California, United States |
| Cooley Godward LLP | Palo Alto, California, United States |
| Copernicus Therapeutics Inc. | Cleveland, Ohio, United States |
| Corazon Inc. | Menlo Park, California, United States |
| Cordis Corp. | Miami Lakes, Florida, United States |
| Core Technology Group, Inc.. | Willow Grove, Pennsylvania, United States |
| Cornell University - Nanobiotechnology Center | Ithaca, New York, United States |
| Cornell University - NanoScale Facility | Ithaca, New York, United States |
| Corvus Energy Limited | Richmond, British Columbia, Canada |
| Costruzioni Solari SRL | Cavallino, Italy |