| Abbreviation | Definition |
|---|---|
| AJA | Ariel Jasmine Alice |
| AJAA | Avon Junior Athletic Association |
| AJAC | Automatic Jamming Avoidance Circuitry |
| AJAO | American Juvenile Arthritis Organization |
| AJATC | Arkansas Juvenile Assessment and Treatment Center |
| AJATC | Arkansas Juvenile Assessment Treatment Center |
| AJAX | Associa????o de Jogadores Amadores de Xadrez |
| AJAX | Associação de Jogadores Amadores de Xadrez |
| AJB | All Japan Budogu |
| AJB | Ambler Junior Baseball |
| AJB | American Journal of Biochemistry |
| AJB | American Journal of Botany |
| AJB | Andrew J Bernoff |
| AJB | Andrew J Brozyna |
| AJB | Arthur's Job Base |
| AJBPO | Area Joint Blood Program Officer |
| AJC | Albert and Jacqueline Cleveland |
| AJC | American Jewish Committee |
| AJC | anti Jaynes Cummings |
| AJC | Apical junctional complex |