| AAACS | Academics Athletics Arts and Community Service 
| Others |
| AAACS | Accuracy Analysis of Artillery Cannon Systems
| Others |
| AAACS | African American and American Cultural Studies
| Others |
| AAACS | Alberta Association of Auto Clubs Society
| Others |
| AAACS | Alberta Association of Automobile Clubs Society
| Others |
| AAACS | Allianz Australia Accident Compensation Services
| Others |
| AAACS | American Association for the Advancement of Curriculum Studies
| Others |
| AAACS | Assistance Animal Access Consulting Services
| Others |
| AAACS | Average Amino Acid Conservation Score
| Others |