| AllBetter | Illinois |
| Allbound, Inc. | Georgia |
| Allcal | Texas |
| AllCells, LLC | California |
| AllCity Technology | Texas |
| AllClear ID | Texas |
| AllClients, LLC | Nevada |
| AllCom Credit Union | |
| Allconnect, Inc. | South Carolina |
| AllDayWeb.com | Texas |
| Allegacy Federal Credit Union | |
| Allegan Credit Union | |
| Allegent Community Federal Credit Union | |
| Allegheny College | Pennsylvania |
| Allegheny College - Department of Computer Science | Pennsylvania |
| Allegheny Wesleyan College | |
| Allegheny-Ludlum Brackenridge Federal Credit Union | |
| Allegiance Capital Corporation | Texas |
| Allegiance Credit Union | |
| Allegiant Capital, LLC | Washington |
| Allegiant Health | New York |
| Allegiant Technology | Kansas |
| Allegis Global Solutions | Maryland |
| AllegisCyber | California |
| Allegro Commodity Mangement | Texas |
| Allegro Consultants, Inc. | California |
| Allegro MicroSystems, Inc. | Massachusetts |
| Allegro Ophthalmics, LLC | California |
| Allegro Software Development Corporation | Massachusetts |
| Allegro.cc | Illinois |
| Allele Biotechnology and Pharmaceuticals, Inc. | California |
| Allelica, Inc. | New York |
| Allen & Gerritsen | |
| Allen + Associates Executive Search, LLC | Ohio |
| Allen Ayler | Oregon |
| Allen Business Machines Co. | Maryland |
| Allen College | Iowa |
| Allen Communication Learning Services | Utah |
| Allen Holub | California |
| Allen Institute | Washington |
| Allen Institute for Artificial Intelligence | Washington |
| Allen Interactions | Minnesota |
| Allen University | South Carolina |
| Allendevaux & Company, LLC | Ohio |
| AllerGenis, LLC | Pennsylvania |
| Allevi, Inc. | |
| Alleviant Medical, Inc. | Texas |
| Alley Cat Media | Virginia |
| Alley Interactive, LLC | New York |
| Alley Stoughton | Massachusetts |