| American Grippers, Inc. | Connecticut |
| American Health Care Software, Inc. | Vermont |
| American Health Research | North Carolina |
| American Information Technology Corporation | Iowa |
| American Institute of Aeronautics and Astronautics | |
| American Institute of Graphic Arts | New York |
| American Institute of Mathematics | California |
| American Institute of Physics | |
| American Institutes for Research | District of Columbia |
| American InterContinental University Online IT Degrees | Georgia |
| American International College | Massachusetts |
| American International Computer Companies | California |
| American International Telephonics, LLC | California |
| American IT Department | |
| American IT Resource Group, Inc. | Illinois |
| American Laserware, Inc. | Florida |
| American Logo Developers | |
| American Management Association | |
| American Marketing Association | |
| American Mathematical Association of Two-Year Colleges | Tennessee |
| American Mathematical Society | Rhode Island |
| American Media Systems, Inc. | California |
| American Medical Informatics Association | Maryland |
| American Medical Software | Illinois |
| American Merchant Center, Inc. | California |
| American Messaging Services, LLC | Texas |
| American Micro Tech | Maryland |
| American Microsemiconductor, Inc. | New Jersey |
| American National Standards Institute | District of Columbia |
| American National University | Virginia |
| American Nursing Informatics Association | New Jersey |
| American Optimal Decisions, Inc. | Florida |
| American Physical Society | |
| American Pop | |
| American Portwell Technology, Inc. | California |
| American Precision Assemblers, Inc. | Illinois |
| American Precision Electronics, Inc. | Illinois |
| American Printware | California |
| American Prudential Capital, Inc. | Texas |
| American Recordable Media | Kentucky |
| American Regent, Inc. | New York |
| American Registry for Internet Numbers Ltd | Virginia |
| American Reliance, Inc. | California |
| American Research Foundation | Delaware |
| American River College | California |
| American Robotics, Inc. | |
| American Semiconductor, Inc. | Idaho |
| American Society for Information Science and Technology | Maryland |
| American Society of Digital Forensics & eDiscovery, Inc. | Georgia |
| American Society of Hematology | |