| Acronym | Definition |
|---|
| AAJ | All About Jazz (website) |
| AAJ | American Association for Justice (Washington, DC) |
| AAJ | American Alpine Journal |
| AAJ | Airasia Japan (airline; Tokyo, Japan) |
| AAJ | Architectural Association of Japan |
| AAJ | American Association of Jurists |
| AAJ | Association Américaine de Juristes (French: American Association of Jurists; est. 1975) |
| AAJ | Akademischer Arbeitskreis Japan (German: Academic Working Group Japan; Austria) |
| AAJ | Alzheimer's Association Japan (est. 1980) |
| AAJ | Administrative Appeals Judge |
| AAJ | Aromatherapy Association of Japan (est. 1996) |
| AAJ | Attitude Adjust |
| AAJ | Astronomical Association of Jamaica (est. 1948) |