| Abbreviation | Definition |
|---|---|
| ARP | Aiim Recommended Practice |
| ARPA | Advance Rehearsal Project Approval |
| ARPC | Analysis Research Planning Consulting |
| ARR | Absolute Risk Reduction |
| ART | Advertising Research Tools |
| ART | Alternative Risk Transfer |
| ART | American Refrigerator Transit Company |
| ART | Attitude, Responsibility, and Trust |
| ARV | Average Retail Value |
| AS | Allocation Status |
| ASA | Advertising Standards Authority |
| ASAB | Administrative Systems Advisory Board |
| ASAP | A Safety Awareness Plan |
| ASAP | Advertising Specialties Attractive Prices |
| ASAP | Aligning Services And Priorities |
| ASAP | Aon Select Accounts Program |
| ASAP | As Soon As Possible |
| ASBT | Australian School of Business and Technology |
| ASCI | Advanced Strategic Computing Initiative |
| ASCOT | Asset Swapped Convertible Option Transaction |