| Acronym | Definition |
|---|
| AAP | American Academy of Pediatrics |
| AAP | Association of American Publishers |
| AAP | Advance Auto Parts Inc |
| AAP | American Academy of Periodontology |
| AAP | American Association of Publishers |
| AAP | Accredited ACH Professional |
| AAP | Army Ammunition Plant |
| AAP | American Academy of Psychotherapists |
| AAP | Address Allocation Protocol |
| AAP | Association of Academic Physiatrists |
| AAP | Alternative Approval Process (ITU-T) |
| AAP | Always A Pleasure |
| AAP | Academic Advancement Program |
| AAP | Accident Analysis and Prevention |
| AAP | Annual Action Plan |
| AAP | Acuerdo de Alcance Parcial (Guatemala) |
| AAP | Academy of American Poets |
| AAP | Australian Associated Press Pty Limited |
| AAP | Accurate As Possible |
| AAP | Applications Access Point |
| AAP | American Academy of Psychoanalysis |
| AAP | Abortion Access Project |
| AAP | Association for Academic Psychiatry |
| AAP | Apollo Applications Program (NASA) |
| AAP | Art Association of the Philippines |
| AAP | Automotive Aftermarket Professional (certification) |
| AAP | Alumni Admissions Program (various universities) |
| AAP | Allied Administrative Publication |
| AAP | Aktion zur Abschaffung des Primatenhandels (German: Campaign Against Animal Testing) |
| AAP | Abbreviated Acquisition Program |
| AAP | Asbestos Action Program |
| AAP | American Academy of Poets |
| AAP | Airlock Adapter Plate (shuttle) |
| AAP | Apollo Advanced Playlist |
| AAP | Associaçao Dos Arquitectos Portugueses |
| AAP | Advanced Acquisition Plan |
| AAP | Antigonish Area Partnership (Antigonish, NS, Canada) |
| AAP | Advance Australia Party |
| AAP | Auxiliary Acceleration Pump |
| AAP | Affirmative Action Plan/Program |
| AAP | Availability Assurance Program |
| AAP | Active Anti-Psychotronic (software) |
| AAP | ACT Assessment Program (admissions, guidance and placement program) |
| AAP | Air Augmented Propulsion |
| AAP | Adopt-A-Pet, Inc. (non-profit organization) |
| AAP | Advanced Automation Program |
| AAP | Authorized Academic Partner |
| AAP | American Association of Producers |
| AAP | Administrative Appeal Process (Department of Defense A-76 Commercial Activities) |
| AAP | Association of Aviation Psychologists |
| AAP | Alternate Access Provider |
| AAP | Average Acquisition Price (pharmaceuticals) |
| AAP | Additional Attendant Panel |
| AAP | Ambulance Association of Pennsylvania |
| AAP | ASEAN Academic Press (London, UK) |
| AAP | Angle Addition Postulate |
| AAP | Atmospheric Air Pressure |
| AAP | Area Air Picture |
| AAP | Assign Alternate Parent |
| AAP | Association Autrichienne à Paris (French: Austrian Association in Paris; est. 1956) |
| AAP | Associative Array Processor |
| AAP | Alarm Annunciator Panel |
| AAP | Attack Assessment Plan |
| AAP | Alabama Association of Pathologists |
| AAP | Adult Asthma Program |
| AAP | Accruals Accounting Project |
| AAP | Army Acquisition Process |
| AAP | Announcement Administration Processor (4ESS) |
| AAP | Asociación Amigos del País (Association of Friends of the Country, Guatemala) |
| AAP | Asbestos Abatement Program |
| AAP | Association of Academic Psychiatrists |
| AAP | Association for Advancement of Psychoanalysis |
| AAP | Adaptive Array Processing |
| AAP | Analyst Assistance Program |
| AAP | Alpes Auto Pièces (French: Alpine Auto Parts) |
| AAP | Analog Accessory Peripheral |
| AAP | Apartment Association of the Panhandle (Amarillo, TX) |
| AAP | ACUS (Area Common User System) ACES (Automated Communication Engineering Software) Prototype |
| AAP | Advanced Applications Programs |
| AAP | Amphibious Assault Planner |
| AAP | Always Annoying People |
| AAP | Association for Advancement of Psychotherapy |
| AAP | Academic Advising Packages |
| AAP | Automated Antenna Positioning |
| AAP | Auxiliary Annunciator Panel |
| AAP | Allowance Appendix Page/Package |
| AAP | Alternate Assignment Program |
| AAP | Association des Architectes Portugais (French: Portuguese Architects Association; Portugal) |
| AAP | Architecture, Art and Planning (Cornell University; New York) |
| AAP | Association of American Physicians |
| AAP | Ask a Professor (US DoD) |
| AAP | Annals of Applied Probability (Institute of Mathematical Statistics) |
| AAP | All About People (various locations) |
| AAP | Area Action Plan |