| Aleon Pharma | New Jersey |
| Aleph America | Nevada |
| Aleph Labs, Inc. | |
| Alepo | Texas |
| Alera Labs, LLC | North Carolina |
| Aleratec, Inc. | California |
| Alercell | Montana |
| Alereon | Texas |
| Aleria, PBC | |
| Alerion Capital Group, LLC | Arizona |
| Alerion Ventures, LLC | South Carolina |
| Alert Media, Inc. | Texas |
| Alert Solutions | Rhode Island |
| Alert Technologies Corporation | California |
| AlertBoot | Nevada |
| AlertBox | Pennsylvania |
| AlertEnterprise, Inc. | California |
| AlertGPS | Utah |
| Alertra | Oklahoma |
| AlertSec, Inc. | Florida |
| Alertus Technologies, LLC | Washington |
| Alesis | Rhode Island |
| Alessa Therapeutics, Inc. | California |
| Aleta Biotherapeutics | Massachusetts |
| Alex Beals | |
| Alex Design, LLC | Florida |
| Alex PC Tech, LLC | Minnesota |
| Alex White | Oregon |
| Alexander Capital Ventures, LLC | New Jersey |
| Alexander Computer Technologies of Arizona, LLC | Arizona |
| Alexandria Data, LLC | Connecticut |
| Alexandria Library Management Software | Utah |
| Alexandria Point of Sale | Florida |
| Alexey Cherkasov | Pennsylvania |
| Alexion Pharmaceuticals, Inc. | Massachusetts |
| Alexis Information Systems, LLC | Arkansas |
| Alexsander Studios | |
| Alexza Pharmaceuticals, Inc. | California |
| Alfa Chemistry | |
| Alfa hosting services & VDS, Inc.. | Georgia |
| Alfa Jango, LLC | Michigan |
| Alfa Scientific Designs, Inc. | California |
| Alfa Web Coders | |
| Alfahive | New Jersey |
| Alfred State College of Technology | New York |
| Alfred University | New York |
| AlfredCamera | |
| Alfresco | California |
| ALG Systems, Inc. | Massachusetts |
| Algebra Buster | Texas |