| American Software | Georgia |
| American Software Testing Qualifications Board, Inc. | Florida |
| American Standard Circuits | Illinois |
| American Systems | Virginia |
| American Tech Supply | California |
| American Technical Services, Inc. | Florida |
| American Technologies | Georgia |
| American Technology Solutions & Cloud, LLC | |
| AMERICAN Technology Solutions, LLC | Arizona |
| American Telecom Solutions | Maryland |
| American Telecommunications Services | Florida |
| American Telemedicine Association | District of Columbia |
| American Telephone | Arizona |
| American Telesis | Colorado |
| American Tower Corporation | Massachusetts |
| American Trust Retirement | |
| American Underground, LLC | North Carolina |
| American Unit, Inc. | Texas |
| American University | District of Columbia |
| American University Department of Computer Science | District of Columbia |
| American University Department of Mathematics and Statistics | District of Columbia |
| American University of Athens | Alabama |
| American Unmanned Systems, LLC | Connecticut |
| American Voice Mail, Inc. | California |
| American Web Club | |
| American Web Coders | California |
| American Web Crafter | |
| American Web Developers | |
| American Web Development | |
| American Web Expert | |
| American Web Geeks | |
| American Web Store | |
| American Web Systems | Texas |
| American Webmasters Association | California |
| American Webs Design Studio | |
| American Xtal Technology | California |
| Americaneagle.com | Illinois |
| Americanoize, LLC | |
| Americas' SAP Users' Group | Washington |
| Americatel Corporation | Maryland |
| AmericaVen, LLC | Pennsylvania |
| Americon | California |
| Americor Electronics Ltd | Illinois |
| Americord | Utah |
| Amerigo Scientific | |
| Amerigo Solutions | Texas |
| AmeriHost International | Pennsylvania |
| Amerilab Technologies, Inc. | |
| Amerinde | California |
| AmeriNet | Michigan |