| AAR | All-American Rejects | |
| AAR | Association of American Railroads | |
| AAR | Association of American Railroads | |
| AAR | Afar | |
| AAR | After Action Review | |
| AAR | After Action Review | |
| AAR | After Action Report | |
| AAR | Aarhus, Denmark | |
| AAR | Association of Authors Representatives | |
| AAR | All American Racers | |
| AAR | Automatic Alternate Routing | |
| AAR | Against All Risks | |
| AAR | A M R Corporation | |
| AAR | Air To Air Refueling | |
| AAR | Airport Acceptance Rate | |
| AAR | All American Racing | |
| AAR | Alliance for Aging Research | |
| AAR | Anime Academy Radio | |
| AAR | AST / ALT Ratio | |
| AAR | Aftermarket Automotive Review | |
| AAR | Able And Ready | |
| AAR | Arbitrary Angle Reduction | |
| AAR | Average Art Rating |
Categories:
AAR