| AFS Web | Ohio |
| After Dark Grafx | California |
| After Hours Consulting | North Carolina |
| After Hours Software, Inc. | Nebraska |
| Afteractive, LLC | |
| AfterCollege, Inc. | |
| AfterLogic Corporation | Delaware |
| Afterlogic.Works | |
| Afterman Software, LLC | Arizona |
| Aftermarket Analytics | Colorado |
| Afternic | Massachusetts |
| AfterNorth | |
| AfterNow, Inc. | |
| Afterparty | |
| AfterShip | Michigan |
| Afton Scientific | Virginia |
| Afton Scientific | |
| AFX Web Studios | |
| AG Global Designs | |
| Ag Leader Technology | Iowa |
| AG Marketing Solutions | Pennsylvania |
| AG Scientific | California |
| AG Technologies | New York |
| AgadeMarketing | |
| AgaMatrix, Inc. | |
| Agami Technologies | |
| Aganitha AI, Inc. | |
| Agape Computer Services | Wisconsin |
| Agari Data, Inc. | California |
| Agaric, LLC | Massachusetts |
| Agastha, Inc. | North Carolina |
| Agastiya Biotech | California |
| Agate Fire Creative, LLC | Wisconsin |
| Agate Software, Inc. | Michigan |
| AgateSoftware | Michigan |
| Agathos Biologics | North Dakota |
| AgBiome, Inc. | North Carolina |
| AGC Biologics | Washington |
| AGC Electronics America, Inc. | Oregon |
| AGC Partners | Massachusetts |
| AGCO Corporation | Georgia |
| Agdata | North Carolina |
| Age Bold, Inc. | |
| AGE Software, Inc. | New York |
| AgEagle Aerial Systems, Inc. | Kansas |
| AGED Diagnostics | |
| Agee Software, Inc. | Texas |
| Agena Bioscience, Inc. | California |
| Agencia de Marketing Digital | |
| Agency | |