| Aaraa Software | |
| Aarc Media Group, LLC | New York |
| Aardvark Therapeutics, Inc. | |
| Aardvark, Inc. | Ohio |
| AArete | Illinois |
| Aarki, Inc. | California |
| Aarna Digital Technologies, LLC | |
| Aaron Computers | South Carolina |
| Aaron Day | |
| Aaron Krauss | |
| Aaron Maxwell | |
| Aaron Quint | New York |
| Aaron Rich Marketing | |
| Aarongraphics | California |
| Aarron Walter | Georgia |
| Aarson, Inc. | Pennsylvania |
| Aarvik Therapeutics, Inc. | |
| AASHTOWare | District of Columbia |
| AASoftech, Inc. | Virginia |
| AASync.com | California |
| AAT Bioquest | |
| Aatrix | North Dakota |
| Aatru Medical, LLC | Ohio |
| Aavatar Consulting | Pennsylvania |
| Aavenir | Texas |
| Aavia | New York |
| Aavis Pharmaceuticals | |
| Aavis Pharmaceuticals | |
| AAVnerGene, Inc. | Maryland |
| Aavocyte, Inc. | |
| AAVogen, Inc. | |
| Aavya | |
| AAXA Technologies, Inc. | California |
| AB Biosciences | Massachusetts |
| AB Computer | California |
| AB Controls, Inc. | California |
| Ab Initio Software, LLC | Massachusetts |
| AB Interfaces | Virginia |
| AB Media USA | |
| AB Medical Technologies | |
| Ab Ovo, Inc. | |
| AB Sims, LLC | Washington |
| AB Soft | California |
| AB Strategic | Indiana |
| AB Studio | California |
| AB&T | Georgia |
| ABA Moriah | Virginia |
| Abaco Systems, Inc. | Alabama |
| Abacode, Inc. | Florida |
| Abacum, Inc. | New York |