| Acuity Spatial Genomics, Inc. | Massachusetts |
| Acuity Strategic Partners, LLC | |
| Acuity Technologies | Florida |
| Acuity, Inc. | |
| AcuityMD, Inc. | |
| Aculocity, LLC | Illinois |
| Acumatica, Inc. | Maryland |
| Acumed, LLC | Oregon |
| Acumedia Corporation | |
| Acumen Advisors | Virginia |
| Acumen Book | New Mexico |
| Acumen Consulting | Missouri |
| Acumen design and consulting | South Carolina |
| Acumen Pharmaceuticals, Inc. | |
| Acumence | Indiana |
| Acumentrics Corporation | Massachusetts |
| Acumera, Inc. | Texas |
| Acumium | Wisconsin |
| Acunetix | Texas |
| AcuNett, LLC | Tennessee |
| Acunote | California |
| AcuPharma Solutions, Inc. | |
| Acura Pharmaceuticals, Inc. | |
| AcuraStem, Inc. | California |
| Acurex Biosciences | California |
| Acurx Pharmaceuticals, Inc. | |
| Acusis, LLC | Pennsylvania |
| Acute Systems Software | Illinois |
| Acutedge, Inc. | Pennsylvania |
| Acutis Biosciences | New Jersey |
| Acutrack | California |
| Acuvity, Inc. | |
| ACV Auctions, Inc. | New York |
| Acveti, Inc. | |
| AcvtiveVideo | California |
| ACW Solutions | Oregon |
| ACwebMarketing | Oregon |
| Acxiom, LLC | Arkansas |
| Ad Astra Diagnostics, Inc. | North Carolina |
| Ad Astra Rocket Company | |
| Ad Astra Ventures | |
| Ad Badger | Texas |
| Ad Buying Network, Inc. | Georgia |
| Ad Design, Inc. | |
| Ad Genius | |
| Ad Hoc | District of Columbia |
| AD HOC Electronics | Utah |
| Ad House Advertising | |
| Ad Leverage | |
| Ad Partners, Inc. | |