| Acronym | Definition |
|---|
| ALSI➣Alps System Integration Co., Ltd. (Japan) |
| ALSI➣Aluminum Silicon |
| ALSI➣Associazione Nazionale Laureati in Scienze dell'Informazione ed Informatica (Udine, Italy) |
| ALSI➣Association of the Lebanese Software Industry |
| ALSI➣Advantage Learning Systems, Inc. (stock symbol) |
| ALSI➣Alberta Life Sciences Institute (Canada) |
| ALSI➣Analytical Laboratory Services, Inc. (est. 1979; Pennsylvania) |