| Abbreviation | Definition |
|---|---|
| AMM | Arizona Memorial Museum |
| AMMA | Arizona Memorial Museum Association |
| AMOS | Association for Morbid Obesity Support |
| AMP | Alliance for Minority Participation |
| AMPO | Association of Metropolitan Planning Organizations |
| AMPS | Association of Motion Picture Sound |
| AMRDS | American Registry for Diagnostic Medical Sonography |
| AMREF | African Medical and Research Foundation |
| AMRIV | American Rivers |
| AMS | American Montessori Society |
| AMSA | American Medallic Sculpture Association |
| AMSA | American Music Scholarship Association |
| AMSAC | Abraham Moss Sub Aqau Club |
| AMSE | Association for Multicultural Science Education |
| AMSI | Applied Management Sciences Institute |
| AMSI | Association of Marine Scientific Industries |
| AMSPAR | Association of Medical Secretaries, Practice Administrators, and Receptionists |
| AMSUS | Association of Military Surgeons of the United States |
| AMVETS | AMerican VETerans |
| AMW | Association of Modern Wizardry |