| Abbreviation | Definition |
|---|---|
| ALIEN | Association Lilloise des Internes En Neurologie |
| ALMA | Adoptees Liberty Movement Association |
| ALOA | Associated Locksmiths Of America |
| ALT | Association Leadership Team |
| ALTA | Academic Language Therapy Association |
| ALTA | American Literary Translators Association |
| ALTE | Association of Language Testers in Europe |
| AMA | Alberta Medical Association |
| AMA | American Marble Association |
| AMA | American Mechanical Association |
| AMA | American Medical Association |
| AMA | American Model Association |
| AMA | Anti Modelers Association |
| AMA | Association of Metropolitan Authorities |
| AMA | Australian Medical Association |
| AMA | Automotive Manufacturers Association |
| AMBA | American Medical Billing Association |
| AMBA | Associacao Medica Brasileira de Acupuntura |
| AMBA | Association of Military Banks of America |
| AMBCI | Associate Member of the Business Continuity Institute |