APA may represent

Among associations:

• APA - The Engineered Wood Association
• Allied Pilots Association
• Amateur Press Association
• American Philological Association
• American Philosophical Association
• Americanist Phonetic Alphabet
• American Planning Association
• American Polygraph Association
• American Poolplayers Association
• American Poultry Association
• American Protective Association, an American anti-Catholic organization during the Gilded Age
• American Psychiatric Association
• American Psychological Association; also
  • APA style, a writing format developed by the above
• American Psychoanalytic Association
• American Psychopathological Association
• ASEAN Ports Association
• Association of Publishing Agencies
• Australian Physiotherapy Association
• Australian Parkour Association
• Japan Advertising Photographers' Association

In entertainment and culture:

• Acolytes Protection Agency, a former professional wrestling tag-team
• American Pale Ale
• Americanist Phonetic Alphabet
• Anglican Province of America
• ARCAM Private Army
• Asia and the Pacific, UNESCO region
• Hong Kong Academy for Performing Arts
• Southern Athabaskan languages (excluding Navajo), from their ISO 639 code

In the military:

• Antagonist Perpetrated Aggression, a Special Tactics Close Quarters Combat System
• Army Prosecuting Authority
• APA is the US Navy's Hull Number prefix for Attack transports

In politics and government:

• Adirondack Park Agency
• Administrative Procedure Act, an American statute controlling government agency actions
• Advance Pricing Agreement
• Anti-pedophile activism
• Australian Progressive Alliance

In transport:

• Apache Railway, from its reporting mark
• Centennial Airport, Arapahoe County, Colorado, United States, from its IATA airport code

APA may also stand for:

• Affine projection algorithm
• All Points Addressable
• Amplified Piezoelectric Actuator
• Asian Pacific American
• Australian Postgraduate Awards
• Austrian Press Agency
• Azerbaijan Press Agency
• HP Auto-Port Aggregation, a network load balancing technology

Apa (without caps) may refer to:

• Apa, Nigeria, a Local Government Area in Benue State, Nigeria
• Apa, Satu Mare, a commune in Satu Mare County, Romania
  • a type of sword named after the village; see Bronze Age sword
• Apa Sherpa, a Nepali Sherpa and famous Mt. Everest mountaineer

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