| Company | Location |
|---|---|
| Discera | Ann Arbor, Michigan, United States |
| DiscoveryBioMed, Inc. | Birmingham, Alabama, United States |
| DK2 Solutions | Cave Creek, Arizona, United States |
| DNA Pharmaceuticals | Miami, Florida, United States |
| DNA Software Inc. | Ann Arbor, Michigan, United States |
| Docter Optics GmbH | Neustadt a. d. Orla, Germany |
| Dome Communications Inc. | Chicago, Illinois, United States |
| DonPenny.com | New York, New York, United States |
| Dow Chemical Company | Midland, Michigan, United States |
| Dow-Key Microwave | Ventura, California, United States |
