| Abbreviation | Definition |
|---|---|
| AMAP | Association of Modified Asphalt Producers |
| AMART | Association of Mid Atlantic Round Tables |
| AMASA | Alliance to the Medical Association of the State of Alabama |
| AMAT | Association for Multicultural Affairs in Transplantation |
| AMATA | Australasian Microarray and Associated Technologies Association |
| AMBA | Albuquerque Mountain Bike Association |
| AMBA | American Malting Barley Association |
| AMBA | American Meishan Breeders Association |
| AMBA | American Mustang and Burro Association |
| AMBA | Association Member Benefit Advisors |
| AMBA | Association Member Benefits Advisors |
| AMBA | Association of Military Banks of America |
| AMBAG | Association of Monterey Bay Area of Governments |
| AMBHA | Alberta Minor Ball Hockey Association |
| AMBHA | American Managed Behavioral Healthcare Association |
| AMBL | Association Motocycliste des Basses Laurentides |
| AMBO | Association of Minnesota Building Officials |
| AMBP | Association of Manitoba Book Publishers |
| AMC | Association of Minnesota Counties |
| AMCA | Air Movement and Control Association |