| Abbreviation | Definition |
|---|---|
| ABUTEC | Advanced Burner Techonologies |
| ABW | A Better Way |
| ABWA | American Business Women's Association |
| ABWB | A Brush with Beauty |
| ABWF | American Blind And Wallpaper Factory |
| ABWF | Arbeitsgemeinschaft Betriebliche WeiterbildungsForschung , e. v. |
| ABZ | Al, Bill, and Zorn Manufacturing, Inc. |
| AC | Air Canada |
| AC | Alex & Company |
| AC | Allis Chalmers |
| AC | Andersen Consulting |
| AC | Appointment Calendar |
| AC | Arctic Cat |
| AC | Audit Committtee |
| AC | Autocraft Carroll |
| ACA | Amoskeag Company A |
| ACA | Anti Copyright Association |
| ACA | Apples of California Agriculture |
| ACA | Asean Cosmetic Association |
| ACAC | AVIC i Commercial Aircraft Company |