| Abbreviation | Definition |
|---|---|
| A | Approved |
| A | Archives |
| A&M | Approach and Methodology |
| a/o | and/or |
| A/R | As Required |
| A2K | Access to Knowledge |
| AA | Acceptance and Action |
| AA | Affirmative Action |
| AAA | Advanced, Available, and Affordable |
| AAA | Alter, Avoid, or Accept |
| AAAC | Advisory Affirmative Action Committee |
| AAAT | Area, Aptitude, Attitude, Traffic |
| AAATP | Advanced Administrative Assistant Training Program |
| AABA | Airport Area Business Association |
| AABN | Access Allies of Bloomington-Normal |
| AABN | Australian Arab Business Network |
| AAC | Advanced Activity Concept |
| AAC | Asymmetry Analysis Collaboration |
| AAC | At All Costs |
| AACS | Australasian Association of Convenience Stores |