APD

APD is an initialism that may refer to:

Medicine

• Afferent pupillary defect
• Acid Peptic Diseases
• Ambulatory Peritoneal Dialysis
• Pamidronic acid, also known as aminohydroxypropylidene bisphosphonate
• Antipsychotic Drugs
• Auditory processing disorder, difficulty in recognising sounds
• Antisocial personality disorder
• Avoidant personality disorder
• Antimicrobial Peptide Database
• Autoimmune progesterone dermatitis

Law enforcement

• Airport Police Division, Singapore
• Akron Police Department
• Albany Police Department (Oregon)
• Albuquerque Police Department
• Amtrak Police Department
• Anaheim Police Department
• Anchorage Police Department
• Annapolis Police Department
• Antioch Police Department
• Apopka Police Department
• Arcadia Police Department
• Asheville Police Department
• Atlanta Police Department
• Aurora Police Department, Colorado
• Austin Police Department

Other

• Air Passenger Duty, an excise duty levied on passengers flying from UK airports
• APD, NYSE stock symbol for Air Products & Chemicals
• APD, reporting mark for the Albany Port Railroad
• Alianza por la Democracia, a Dominican Republic political party
• Alpha Phi Delta, an American college fraternity
• APD, National Rail code for Appledore (Kent) railway station
• APD-40, a stretch of highway near Cleveland, Tennessee
• A designation for highways that are part of the Appalachian Development Highway System (ADHS).
• Association de la paix par le droit, a French pacifist organisation
• Avalanche photodiode, a device for counting photons
• Apple Accessory Products Division, former name for The Keyboard Company, Inc.
• A retired US Navy hull classification symbol: High-speed transport (APD)
• American political development