| Acronym | Definition |
|---|
| AJA | Aj Auxerre (French soccer club) |
| AJA | Adjacent |
| AJA | American Jail Association |
| AJA | American Journal of Archaeology |
| AJA | Al Jazeera America (news channel) |
| AJA | American Judges Association |
| AJA | Aujourd'Hui J'ai Appris (French: Today I Have Learned) |
| AJA | Americans of Japanese Ancestry (WWII era term used to refer to Japanese-Americans) |
| AJA | Anglo-Japanese American (international certification agency) |
| AJA | American Journal on Addictions |
| AJA | Association Jeunesse Action (French: Youth Action Association; Mali) |
| AJA | All Jokes Aside (band) |
| AJA | A Just Australia (Refugee Council of Australia) |
| AJA | Austin Japan Association (Austin, TX) |
| AJA | American Journal of Audiology |
| AJA | Ajaccio, Corsica, France - Campo Dell Oro (Airport Code) |
| AJA | American Journal of Anesthesiology |
| AJA | Armenian Jeweler's Association |