| Abbreviation | Definition |
|---|---|
| ALSP | Association of Language Service Providers |
| ALSP | Association of Laser Safety Professionals |
| ALT | Association for Linguistic Typology |
| ALTA | Adult Literacy Tutors Association |
| ALTOA | All Ladakh Tour Operator Association |
| ALTOA | All Ladakh Tour Operators Association |
| ALVO | Association of Local Voluntary Organisations |
| ALYA | American Latvian Youth Association |
| AMA | Alberta Medical Association |
| AMA | Alternative Medicine Association |
| AMAA | Aerospace Manufacturers' Agents Association |
| AMAA | American Maine Anjou Association |
| AMAA | American Medical Association Alliance |
| AMAA | Armenian Missionary Association of America |
| AMAC | Asset Management Association of China |
| AMAC | Association for Metroarea Autistic Children |
| AMAC | Association of Mature American Citizens |
| AMAI | Alkali Manufacturers Association of India |
| AMAILA | Australian Migration Agent and Immigration Lawyer Association |
| AMANA | American Moroccan Association in North America |