| Abbreviation | Definition |
|---|---|
| ALPFA | Association of Latino Professionals for America |
| ALPFA | Association of Latino Professionals in Finance and Accounting |
| ALPHA | Association of Local Public Health Agencies |
| ALPO | Association of Lunar and Planetary Observers |
| ALPP | Association Luxembourgeoise des Professionnels du Patrimoine |
| ALPSP | Association of Learned Professional Society Publishers |
| ALRA | Abortion Law Reform Association |
| ALRA | Alberta Lacrosse Referee Association |
| ALRA | American Land Rights Association |
| ALRA | American Legion Riders Association |
| ALRA | Association of Labor Relations Agencies |
| ALSA | Alberta Land Surveyors Association |
| ALSA | Alpaca Llama Show Association |
| ALSA | Alps Language Service Association |
| ALSA | Asian Law Students Association |
| ALSA | Australian Law Students' Association |
| ALSA | Australian Liquor Stores Association |
| ALSC | Association for Library Service to Children |
| ALSC | Association of Library Service to Children |
| ALSD | Association of Luxury Suite Directors |