| American Medical Students Association | Academic & Science |
| Applied Math Science Academy | Academic & Science |
| Australian Medical Student's Association | Academic & Science |
| Asian Medical Students Association | Academic & Science |
| American Mens Studies Association | Academic & Science |
| American Medical Student Association | Academic & Science |
| American Meat Science Association | Business |
| Azienda Milanese Servizi Ambientali, S.p.A. | Business |
| Australian Marine Sciences Association | Business |
| Association of Marist Schools Australia | Business |
| American Moving & Storage Association | Business |
| American Medallic Sculpture Association | Community |
| American Music Scholarship Association | Community |
| Ahmadiyya Muslim Students' Association | Community |
| Advanced Math and Science Academy | Community |
| Anoka Middle School for the Arts | Community |
| American Moving and Storage Association | Community |
| Assam Medical Service Association | Community |
| Association of Marist Schools of Australia | Community |
| American Mini Sprint Association | General |
| AMMASANDRA | Indian Railway Station |
| Army Maintenance Support Activity | Military and Defence |
| Area Maintenance Support Activity | Military and Defence |
| Advanced Manned Strategic Aircraft | Military and Defence |
| Australian Marine Science Association | Regional |
| Australian Maritime Safety Authority | Regional |
| Austin Mens' Soccer Association | Sports |
| Assateague Mobile Sportsfishermen's Association | Sports |
