| AAU | Aalborg University 
| Others |
| AAU | Academy of Art University
| Others |
| AAU | Acute Anterior Uveitis
| Others |
| AAU | Acute Assessment Unit
| Others |
| AAU | Addis Ababa University
| Others |
| AAU | Adekunle Ajasin University, Akungba
| Others |
| AAU | Administrative Appeals Unit
| Others |
| AAU | Al-Ahliyya Amman University
| Others |
| AAU | All About Us
| Others |
| AAU | All Assassins Unit
| Others |
| AAU | Allgemeine Arbeiter Union
| Others |
| AAU | Allied American Underwriters
| Others |
| AAU | Allied American University
| Others |
| AAU | Alpha Acid Unit
| Others |
| AAU | Alpha Acid Units
| Others |
| AAU | Amateur Athlete Union
| Others |
| AAU | Amateur Athletic Union
| Others |
| AAU | Amateur Athletic Union of the United States
| Others |
| AAU | Amateur Athletics Union
| Others |
| AAU | Amature Athletic Union
| Others |
| AAU | Amendment to Allege Use
| Others |
| AAU | American Apostolic Union
| Others |
| AAU | American Assault Units
| Others |
| AAU | American Athletic Uniforms
| Others |
| AAU | American Athletic Union
| Others |
| AAU | Ameteur Athletic Union
| Others |
| AAU | Amino Acid Utilization
| Others |
| AAU | Amite Alumni United
| Others |
| AAU | Analog Applique Unit
| Others |
| AAU | Application Assistance Unit
| Others |
| AAU | Arithmetic Address Unit
| Others |
| AAU | Asau, Samoa
| Others |
| AAU | Asian Americans United
| Others |
| AAU | Assigned Amount Units
| Others |
| AAU | Association of African Universities
| Others |
| AAU | Association of American Universites
| Others |
| AAU | Association of American Universities
| Others |
| AAU | Association of American University
| Others |
| AAU | Audio Access Unit
| Others |
| AAU | Automobile Association of Uganda
| Others |