| Acronym | Definition |
|---|
| APJ | Astrophysical Journal |
| APJ | Asia Pacific Japan |
| APJ | Asia Pacific and Japan |
| APJ | Aerospace Power Journal (USAF Air University) |
| APJ | Agent de Police Judiciaire (French: Judicial Police Officer) |
| APJ | American Poetry Journal |
| APJ | Administrative Patent Judge |
| APJ | Association Philippe Jabre (financial aid; Lebanon) |
| APJ | Acta Paediatrica Japonica (Japanese pediatric journal) |
| APJ | Australian Police Journal |
| APJ | All Platform Journalist (multimedia reporting) |
| APJ | Assistant Presiding Judge |
| APJ | Acción Pastoral Juvenil (Guatemala Catholic youth group) |
| APJ | Archives of Pathology Journal |