| Abbreviation | Definition |
|---|---|
| ALSI | Advantage Learning Systems Inc |
| ALSI | Air and Liquid Systems Incorporated |
| ALSI | Analytical Laboratory Services, Inc. |
| ALSI | Appalachian Lighting Systems Inc |
| ALSI | Appraisal & Liquidation Services, Inc. |
| ALSI | Appraisal & Liquidation Services, Incorporated |
| ALSI | Automated Library Systems International |
| ALSS | Advanced Lighting Sound Solutions |
| ALSS | Advanced Lighting & Sound Solutions |
| ALSU | Alliance Laundry Systems University |
| ALTA | Advanced Linkage Technologies Of America |
| ALTA | American Land Title Association |
| Altaba | Alibaba’s father ("Al" is short for "Alibaba", and "taba" means "his father" in Chinese) |
| Altaba | Alibabas father ( Al is short for Alibaba , and taba means his father in Chinese) |
| ALTABA | ALTernative and AliBAba |
| ALTC | American Land Title Company |
| ALTC | Amsterdam Legal Translations Consultancy |
| ALTH | A Little Touch of Heaven |
| ALTO | Association of Language Travel Organisations |
| ALWI | Advanced Land and Water Inc |