| Acronym | Definition |
|---|
| ALSA | Advanced Linux Sound Architecture |
| ALSA | Amyotrophic Lateral Sclerosis Association |
| ALSA | Alberta Land Surveyors Association |
| ALSA | Australian Law Students' Association |
| ALSA | Alpaca and Llama Show Association |
| ALSA | Air Land Sea Application Center (US DoD) |
| ALSA | Alps Language Service Association (Japan) |
| ALSA | Astonaut Life Support Assembly |
| ALSA | Adult Learning Strategies and Approaches |
| ALSA | Arab Law Students Association |
| ALSA | Automóviles Luarca, Sociedad Anónima |
| ALSA | Adaptive Latent Semantic Analysis (junk e-mail filtering technology) |
| ALSA | artificial life-support apparatus |