| Abbreviation | Definition |
|---|---|
| ASCOP | Applied Science Corporation Of Princeton |
| ASCP | ASC Pacific Company |
| ASD | Accelerator Systems Division |
| ASD | Advanced Strategy Division |
| ASD | Agile Software Development |
| ASD | Armament Systems Division |
| ASD | Auscape Services Department |
| ASDC | Automotive Skill Development Corporation |
| ASDT | Advanced Structural Drying Technologies |
| ASE | American Street Edge |
| ASE | Automotive Service Enterprise |
| ASE | Autumn Stream Entertainment |
| ASEC | Advanced Systems Engineering Corporation |
| ASEC | Aeronautics and Space Engineering Company |
| ASEC | American Sports Entertainment Company |
| ASEC | Applied Solar Energy Corporation |
| ASEC | Arab Swiss Engineering Company |
| ASEC | Aviation Systems Engineering Company |
| ASEI | Air Systems Engineering Inc |
| ASEI | American Science and Engineering Inc |