APA

APA may stand for:

• American Psychiatric Association
• American Psychological Association; also
  • APA style, a writing format developed by the above
• American Psychoanalytic Association
• American Psychopathological Association

APA may also stand for:

• Acolytes Protection Agency, a former professional wrestling tag-team
• Adirondack Park Agency
• Administrative Procedure Act, an American statute controlling government agency actions
• Advance Pricing Agreement
• Affine projection algorithm
• Allied Pilots Association
• All Points Addressable
• Amateur Press Association
• American Pale Ale
• American Payroll Association
• American Philological Association
• American Philosophical Association
• American Planning Association
• American Polygraph Association
• American Poolplayers Association
• American Poultry Association
• American Protective Association, an American anti-Catholic organization during the Gilded Age
• Americanist Phonetic Alphabet
• Anglican Province of America
• Antagonist Perpetrated Aggression, a Special Tactics Close Quarters Combat Sysytem
• Anti-pedophile activism
• Apache Railway, from its Association of American Railroads reporting mark
• ARCAM Private Army
• Army Prosecuting Authority
• Asia and the Pacific, UNESCO region
• Asian Pacific American
• Association of Publishing Agencies
• Australian Physiotherapy Association
• Australian Postgraduate Awards
• Australian Progressive Alliance
• Austrian Press Agency
• Azeri Press Agency
• Centennial Airport, Arapahoe County, Colorado, United States, from its IATA airport code
• Hong Kong Academy for Performing Arts
• Japan Advertising Photographers' Association
• Southern Athabaskan languages (excluding Navajo), from their ISO 639 code

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
• Appa, a Nepali Sherpa and famous Mt. Everest mountaineer