| Abbreviation | Definition |
|---|---|
| A | Annealing |
| A&I | Assembly & Installation |
| A&S | Accident Sickness |
| A&S | Accident & Sickness |
| A/V | Air Vehicle |
| AA | Air Abrasion |
| AA | Automated Anvil |
| AAE | Atmospheric Air Ejector |
| AAM | Alliance for American Manufacturing |
| AAM | American Axle Manufacturing |
| AAMA | American Architectural Manufacturing Association |
| AART | Alternative Assembly and Reflow Technique |
| ABL | Approved Bidders List |
| ABPC | Alkyd Base Primer Coating |
| ABR | Abrasive Blasting and Restoration |
| ABR | As-Built Records |
| ABV | Air Blast Valve |
| AC | Acceptance Criteria |
| AC | Aqueous Coating |
| AC | Assurance Check |