| Abilene Teachers Federal Credit Union | |
| Abilita Bio, Inc. | California |
| Abilita Therapeutics | |
| Ability Business Computing Ltd | Ohio |
| Ability Multimedia | Washington |
| Ability Technologies | Colorado |
| Abine, Inc. | |
| aBioBot, Inc. | Ohio |
| Abiocode | California |
| Abiomed | Massachusetts |
| Abiosciences | California |
| ABIS Consulting Group | Texas |
| ABIS, Inc. | Texas |
| AbiTeq, LLC | Oregon |
| ABItronix, LLC | New Jersey |
| Abke Design | Michigan |
| ABL Computers | New York |
| ABL Electronic Supplies, Inc. | North Carolina |
| ABL Space Systems | California |
| Ablacon, Inc. | Colorado |
| Ablative Solutions, Inc. | Massachusetts |
| Able Device | North Carolina |
| Able Disabled Programming Group, LLC | Louisiana |
| Able Engine | Kentucky |
| Able Medical Devices | Michigan |
| Able Ribbon Technology, Inc. | California |
| Able Software Company | California |
| Able Software Corporation | Massachusetts |
| Able Solutions Corporation | Washington |
| Able Zebra Communications, LLC | Maryland |
| AbleBackup | Connecticut |
| AbleDesign.com | Oregon |
| Ablesoft Solutions, Inc. | Illinois |
| AbleSys Corporation | California |
| AbleTo, Inc. | |
| Ablexis | California |
| ABM Agency | |
| ABM Respiratory Care | Minnesota |
| ABM Therapeutics | |
| ABME Corporation | New York |
| ABMS | California |
| ABMX Servers | California |
| ABN Computers | Pennsylvania |
| ABNB Federal Credit Union | |
| Abnormal Security Corporation | California |
| Abon Pharmaceuticals, LLC | New York |
| Abound Social, LLC | Kansas |
| About Google | California |
| ABOUT Healthcare, Inc. | |
| About Objects, Inc. | Virginia |