| Abbreviation | Definition |
|---|---|
| AMSD | Association of Metropolitan School Districts |
| AMSDA | Association of Madison School District Administrators |
| AMSF | Association des Maitres en Ski de Fond |
| AMSI | Association of Muslim Scholars in Iraq |
| AMSP | Association of Microsoft Solution Providers |
| AMSRA | Alaska Midnight Sun Rowing Association |
| AMT | American Medical Technologists |
| AMTA | American Modeling Teachers Association |
| AMTA | Antenna Measurement Techniques Association |
| AMTA | Arrogant Massage Therapy Association |
| AMTA | Association for Machine Translation in the Americas |
| AMUSA | Association of Marine Underwriters in South Africa |
| AMWA | American Medical Women's Association |
| AMWA | American Medical Writers Association |
| AMWA | Association of Metropolitan Water Agencies |
| AMWI | Association of Medical Women in India |
| AMWS | Association of Massachusetts Wetland Scientists |
| AMZA | American Miniature Zebu Association |
| ANA | American Neurological Association |
| ANA | Article Numbering Association |