| Company | Location |
|---|---|
| Arete Corp. | Center Harbor, New Hampshire, United States |
| Argonaut Technologies | Foster City, California, United States |
| Argonide Corp. | Sanford, Florida, United States |
| Argonne National Laboratory | Argonne, Illinois, United States |
| Argus Group | Chesterfield, Michigan, United States |
| ARIAD Pharmaceuticals Inc. | Cambridge, Massachusetts, United States |
| Arizona Technology Enterprises | Scottsdale, Arizona, United States |
| Ark Venture Partners | Palo Alto, California, United States |
| Arkalon Chemical Technologies, LLC. | Meriden, Connecticut, United States |
| Arkansas Power Electronic International, Inc. | Fayetteville, Arkansas, United States |
