| Acronym | Definition |
|---|
| APD | Austin Police Department |
| APD | Air Products and Chemicals, Inc. |
| APD | Action Potential Duration (electrophysiology) |
| APD | Auditory Processing Disorder (previously known as Central Auditory Processing Disorder) |
| APD | Agency for Persons with Disabilities |
| APD | Aide Publique au Développement (French: Official Development Assistance) |
| APD | Air Passenger Duty |
| APD | Avalanche Photodiode |
| APD | Atlanta Police Department |
| APD | Albuquerque Police Department (New Mexico, USA) |
| APD | Avoidant Personality Disorder |
| APD | Anchorage Police Department (Alaska, USA) |
| APD | Anaheim Police Department |
| APD | Advance Planning Document |
| APD | Avalanche Photo Diode |
| APD | Application for Permit to Drill (oil & gas) |
| APD | Army Publishing Directorate |
| APD | Avant Projet Détaillé (French: Detailed Pre-Project; architectural planning stage) |
| APD | Alexandria Police Department |
| APD | Avant-Projet Définitif (French: Final Draft) |
| APD | Albany Police Department |
| APD | Average Period |
| APD | Automatic Power Down |
| APD | Appel de Préparation à la Défense (French: Call for Defense Preparation) |
| APD | As Previously Discussed |
| APD | Administrative Professionals Day (formerly Secretaries Day; International Association of Administrative Professionals) |
| APD | Alpha Phi Delta (fraternity) |
| APD | Arcadia Police Department (Arcadia, CA) |
| APD | Accomplished Performance Dog (USDAA dog agility title) |
| APD | All Position Dancing (square dancing) |
| APD | Additional Product Documentation |
| APD | Application Parameter Descriptor |
| APD | Atrial Premature Depolarization |
| APD | Arcata Police Department |
| APD | Anakh Punjab Di (Bhangra team; Los Angeles, CA) |
| APD | Asian Power Devices Inc. |
| APD | Asia & Pacific Department (International Monetary Fund) |
| APD | Abnormal Peak Day (utility gas transmission) |
| APD | American Poetry Database |
| APD | Autofahrerpartei Deutschland (Auto Driver Party; Germany) |
| APD | African Pollen Database (international research network) |
| APD | Advanced Professional Degree |
| APD | Advanced Products Division |
| APD | Association Perspectives Dentaires (French: Dental Outlook Association) |
| APD | Anti-Phase Domain |
| APD | Abington Police Department (Abington, PA) |
| APD | Asociaþia Pro Democraþia (Romania) |
| APD | Average Packet Delay |
| APD | Amsterdam Police Department (New York) |
| APD | Alternating Polyelectrolyte Deposition |
| APD | Areal Power Density |
| APD | Axial Power Distribution |
| APD | Activity Precedence Diagram |
| APD | Air Particulate Detector |
| APD | Accounting Policy Division |
| APD | Association of Pressure Washer Distributors |
| APD | Accurate Peak Detector |
| APD | Arcata Pizza and Deli |
| APD | Advanced Planning Division |
| APD | Acting Principal Deputy |
| APD | Asphalt Pavement Design |
| APD | Albany Port Railroad Corporation |
| APD | Angular Power Distribution |
| APD | Adaptive Preferential Defense |
| APD | Astronaut Positioning Device |
| APD | Antenna Pointing Data |
| APD | Area Pharmacy Director (Kaiser Permanente) |
| APD | Azimuthal Photoelectron Diffraction |
| APD | Advanced Program Development |
| APD | Air Procurement District |
| APD | Associate Production Director |
| APD | Angular Probability Density |
| APD | Area Postal Directory |
| APD | AWIPS Production Decision |
| APD | Aimpoint Determination |
| APD | Assistant Pascal/Delphi |
| APD | Anti Pit Device (Robot Wars, game) |
| APD | Announcement of Product Development |
| APD | Afterent Pupillary Defect |
| APD | Association pour Assistance aux Personnes Defavorisees (French) |
| APD | Advanced Packet Duplicator |
| APD | Atmospheric Plasma Decontamination (neutralizing biological warfare agents) |
| APD | Air Pressure Detonator |
| APD | Advance Planning Directive |
| APD | Acoustic Products Division |
| APD | Alliance for Paired Donation, Inc. (kidney donation; Maumee, OH) |
| APD | Active Pixel Displays |
| APD | All Purpose Decontaminant |
| APD | Axiomatic Product Development Ltd (Concord, ON, Canada and Troy) |
| APD | All Purpose Defensive (Shelter) |
| APD | Assertions and Printf Debugging |
| APD | Automatic Paralleling Device |
| APD | Avondale Police Department (Avondale, AZ) |
| APD | Arizona Paintball Depot (Phoenix, AZ) |
| APD | Alianzas Público Privadas (Spanish: Public-Private Partnership; Guatemalan business law) |
| APD | Air Pressure Drop (heating and cooling) |
| APD | Automatic Peritonaeal Dialysis (nephrology) |
| APD | Arab Press Digest (publication) |
| APD | Academic and Professional Development (various locations) |
| APD | Appliance Parts Depot (various locations) |
| APD | ASHA (American Speech-Language-Hearing Association) Professional Development |
| APD | Academic Program Development (various locations) |
| APD | Assistant Project Director (job) |