| AAST | Academy for the Advancement of Science and Technology 
| Others |
| AAST | Academy for the Arts Science and Technology
| Others |
| AAST | Academy for the Arts, Science and Technology
| Others |
| AAST | Advanced Automotive Service Technology
| Others |
| AAST | American Association for Surgery of Trauma
| Others |
| AAST | American Association for the Surgery of Trauma
| Others |
| AAST | American Association Of State Troopers
| Others |
| AAST | Arab Academy for Science and Technology
| Others |
| AAST | Army Aerial Scout Test
| Others |
| AAST | Autumn Art Studios Tour
| Others |