| AAP | Affirmative Action Plan/Program | In English | |
| AAP | Airlock Adapter Plate | In English | |
| AAP | Analog Autopilot | In English | |
| AAP | Assemble At Pad | In English | |
| AAP | American Academy of Pediatrics | In English | → Academies → Pediatry |
| AAP | American Academy of Periodontology | In English | → Academies → Dentistry |
| AAP | American Academy of Psychoanalysis | In English | → Academies → Psychology |
| AAP | American Academy of Psychotherapists | In English | → Academies → Psychology → Medicine |
| AAP | Association for Academic Psychiatry | In English | → Associations → Psychiatry |
| AAP | Association for the Advancement of Psychoanalysis | In English | → Associations → Psychology |
| AAP | Association for the Advancement of Psychotherapy | In English | → Associations → Psychology → Medicine |
| AAP | Association of Academic Physiatrists | In English | → Associations → Psychiatry |
| AAP | Association of American Physicians | In English | → Associations → Medicine |
| AAP | Agent d'Administration Principal | In French | → Public administration, government |
| AAP | Administrative Acceptability Procedure | In English | → Quality management → Public administration, government |