| Abbreviation | Definition |
|---|---|
| ALLM | Advantage Lawn and Landscape Management, Inc. |
| ALM | Asset Liability Management |
| ALMC | Australasian Lubricants Manufacturing Company |
| ALOC | Abergavenny Light Opera Company |
| ALOC | American Limb Orthopedic Company |
| ALP | Alexandria Light and Power |
| ALPHA | Adequate Lab for Progressive and Harmonic Afghanistan |
| ALPS | Associated Leisure Products Shop |
| ALR | A Living Rainbow Studios |
| ALS | American Lightwave Systems |
| ALS | Appraisal & Liquidation Services, Inc. |
| ALS | Appraisal & Liquidation Services, Incorporated |
| ALS | Aurora Locksmith Services, Inc. |
| ALSC | Acadiana Legal Service Corporation |
| ALSC | Acadiana Legal Services Corporation |
| ALSC | Adirondack Lakes Survey Corporation |
| ALSC | Alaska Legal Services Corporation |
| ALSC | Alta Loma Scientific Consulting |
| ALSI | Active Learning Systems, Inc. |
| ALSI | Advanced Logic Systems, Inc. |