| General MicroGrids | San Diego, California, United States |
| General Motors Technical Centers | Warren, Michigan, United States |
| General Nanotechnology LLC | Berkeley, California, United States |
| GeneSegues Inc. | Chaska, Minnesota, United States |
| Geneva Aerospace | Addison, Texas, United States |
| Gennum Corp. | Burlington, Ontario, Canada |
| Genomic Solutions Inc. | Ann Arbor, Michigan, United States |
| Genospectra Inc. | Fremont, California, United States |
| Genzyme Corp. | Cambridge, Massachusetts, United States |
| George Washington University | Washington, District Of Columbia, United States |