| Abbreviation | Definition |
|---|---|
| 144 | A gross; twelve dozen |
| 3PMSF | 3 Peak Mountain Snow Flake |
| AA | Adjustable Arms |
| AA | Automated Anvil |
| AA | Automatic Analyzer |
| AAC | Advanced Auto Clamp |
| AACTS | Automated Accelerated Characterization Test System |
| AAE | Advanced Action Engine |
| AAE | Alkylated Amine Epoxy |
| AAFI | Air Assisted Fuel Injector |
| AAMPS | Arizona Association of Medical Products Suppliers |
| AAP | Associated Air Products |
| AAPA | Associate Annuity Products and Administration |
| AAPL | Asian Agricultural Products Ltd |
| AATP | All America Threaded Products |
| AAV | Automobile Air Vent |
| AB | Anheuser-Busch |
| ABC | Altek Bar Code |
| ABC | American Brilliant Cut |
| ABD | Anti Bounce Device |