| Fitel Technologies Inc. | Clinton, New Jersey, United States |
| Five Star Technologies Inc. | Cleveland, Ohio, United States |
| FlackTek Inc. | Landrum, South Carolina, United States |
| Flagship Ventures | Cambridge, Massachusetts, United States |
| Flamel Technologies SA | Venissieux Cedex, France |
| FlexEnergy, LLC | Portsmouth, New Hampshire, United States |
| FlexICs Inc. | Milpitas, California, United States |
| Flextronics Photonics | Hillsboro, Oregon, United States |
| FLITE Material Sciences | Montreal, Quebec, Canada |
| Florida State University - Center for Materials Research and Technology | Tallahassee, Florida, United States |