| Abbreviation | Definition |
|---|---|
| ALC | Air Lease Corporation |
| ALC | Atlantic Lottery Corporation |
| ALC | Automotive Leather Company |
| ALCI | American Laminating Company of Indiana, Inc. |
| ALCL | Arts Leacock Computer Labs |
| ALCO | American Locomotive Company |
| ALCO | American Locomotive Company Over |
| ALCOA | Aluminum Company of America |
| ALDC | Anaconda Local Development Corporation |
| ALE | Adam Leonard Edwards |
| ALEFC | American Legion Endowment Fund Corporation |
| ALFA | Anonima Lombarda Fabbrica Automobili |
| ALFS | African Legend Financial Services |
| ALGI | American Locker Group Inc |
| ALI | Acer Labs Inc |
| ALI | Associated Laboratories, Inc. |
| ALIC | Agriculture and Livestock Industries Corporation |
| ALIC | Arizona Liquor Industry Consultants |
| ALIL | Ashburton Lyndhurst Irrigation Ltd |
| ALL | American League Life |