| Alphasports Tech | |
| AlphaSquad Technologies | |
| Alphasquad Technologies | |
| AlphaStax, LLC | Missouri |
| Alphathena, LLC | |
| AlphaThera, Inc. | Pennsylvania |
| Alphatronics | Florida |
| AlphaTrust Corporation | Texas |
| AlphaWatch AI | California |
| AlphaWorks Capital Management | |
| Alphazyme | Florida |
| Alphazyme, LLC | |
| Alpheus Medical, Inc. | Minnesota |
| Alpheus Medical, Inc. | |
| Alphident Technologies, Inc. | |
| Alphina Therapeutics, Inc. | |
| Alphind Healthcare | |
| Alphyn Biologics, Inc. | Maryland |
| Alpide Technologies, LLC | |
| Alpine Business Systems, Inc. | |
| Alpine Clinical Research Center | Colorado |
| Alpine Eagle | |
| Alpine Electronics | California |
| Alpine Electronics of America, Inc. | California |
| Alpine Immune Sciences | Washington |
| Alpine Investors | California |
| Alpine Power Systems | Michigan |
| Alpine Software | Oregon |
| Alpine Technology Group | Colorado |
| Alpine Web Media | Vermont |
| Alpine.io | Oregon |
| AlpineWeb Design | New Hampshire |
| ALPS Technology, Inc. | California |
| ALR Systems & Software, Inc. | Nebraska |
| ALS Biologics, Inc. | |
| Also Creative, Inc. | |
| AlsoEnergy, Inc. | Colorado |
| Alsoft, Inc. | Texas |
| Alsop Louie Partners | California |
| ALSTEM, Inc. | |
| Alsym Energy, Inc. | |
| Alt Creative | |
| Alt Ethos | |
| Alt Ethos Ltd | Colorado |
| Alt Legal, Inc. | |
| Alt Media Studios | |
| Alt-Bionics | |
| Alta Associates | New Jersey |
| Alta Biomaterials | California |
| Alta Biomed | |