APA

APA may refer to:

Associations

American

• American Payroll Association
• Allied Pilots Association, the certified collective bargaining agent for American Airlines pilots
• American Philological Association, North American scholarly organization devoted to Greek and Roman civilization
• American Philosophical Association, main professional organization for philosophers in the United States
• American Planning Association, a professional organization representing the field of city and regional planning in the United States
• 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, writing format developed by the above
• American Psychoanalytic Association
• American Psychopathological Association
• APA – The Engineered Wood Association, formerly known as the American Plywood Association

Other

• Aborigines Progressive Association, an Australian organization
• All Peoples' Association (1930–1936), a British voluntary organization
• Association of Panamerican Athletics
• Australian Parkour Association
• Japan Advertising Photographers' Association
• Association of Publishing Agencies

Entertainment and culture

• Acolytes Protection Agency, a former professional wrestling tag-team
• Agency for the Performing Arts, a talent and literary agency
• Amateur press association, a group of people who self-publish material among themselves
• American pale ale
• Americanist Phonetic Alphabet, now known as the Americanist phonetic notation
• Anglican Province of America
• ARCAM Private Army, a protagonist in the Spriggan (manga)
• The Hong Kong Academy for Performing Arts
• apa, ISO 639 code of the Southern Athabaskan languages (excluding Navajo)
• Antarctic Protected Area

Military

• Army Prosecuting Authority
• APA, the US Navy's Hull Number prefix for Attack transports

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
• NSDAP Office of Foreign Affairs (Außenpolitisches Amt der NSDAP)

Transport

• A-P-A Transport Corp.
• Apache Railway, from its reporting mark
• Centennial Airport, Arapahoe County, Colorado, United States, IATA airport code

Other uses

• Aldosterone-Producing Adenoma
• All Points Addressable
• Amplified piezoelectric actuator
• Anderson Preparatory Academy, a school in Indiana, United States
• Asian Pacific American
• Asset purchase agreement
• Atypical polypoid adenomyoma
• Australian Postgraduate Awards
• Austria Press Agency (German: Austria Presse Agentur)
• Azerbaijan Press Agency

Apa (without caps)

• Father (1966 film) (Hungarian: Apa), a 1966 Hungarian film
• Apa, Iran, a village in Hormozgan Province, Iran
• 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
• Apa, an Amazonas-class corvette of the Brazilian Navy