A | Amortization (Finance) | |
| AACA | Asian American Contractors Association | |
| AACS | Asbestos Abatement Contractors Supervisors | |
| AAODC | American Association of Oilwell Drilling Contractors | |
| AB | Alternated Bid | |
| ABC | Associated Builders and Contractors | |
| ACAA | Artisan Contractors Association of America | |
| ACAF | Asphalt Contractors Association of Florida | |
| ACAP | As Close As Possible | |
| ACCO | Air Conditioning Contractors of Ohio | |
| ACD | Approved Contractor’s Drawings | |
| ACEA | Austin Contractors Engineers Association | |
| ACER | Annual Contractor Evaluation Report | |
| ACIG | American Contractors Insurance Group | |
| ACLC | Academy of Contractor Licensing of California | |
| ACNM | Associated Contractors of New Mexico | |
| ACOM | AHCCCS Contractor Operations Manual | |
| ACOM | AHCCCS Contractors Operations Manual | |
| ACP | Application for Certificates of Payment | |
| ACRU | Asbestos Contractors Registration Unit | |
| ACRU | Asbestos Contractors’ Registration Unit | |
| ADC | Association of Diving Contractors | |
| ADP | Assemble Design of Plan | |
| AECB | Alabama Electrical Contractors Board | |
| AESC | Architects Engineers Surveyors and Contractors |
