APA

• Acolytes Protection Agency, a professional wrestling tag-team
• Agency for the Performing Arts, a talent and literary agency
• Father (1966 film) ({{langx|hu|Apa|link=no}})

• Administrative Procedure Act (United States), a statute controlling government agency actions
• Administrative Procedure Act (Switzerland)
• Advance pricing agreement
• Approved Publication Arrangement
• Accredited parliamentary assistant to a Member of the European Parliament

• Americanist phonetic notation or the American phonetic alphabet
• Southern Athabaskan languages excluding Navajo (ISO 639 code: apa)

• APA Group (Australia), electricity generation and gas pipeline company
• Aborigines Progressive Association
• Australian Parkour Association
• Australian Progressive Alliance

• Japan Advertising Photographers' Association
• APA Group (Japan), a Japanese hotel chain

• All Peoples' Association (1930–1936), a British organisation for international amity
• Army Prosecuting Authority, former government body
• Association of Publishing Agencies

• APA – The Engineered Wood Association, formerly the American Plywood Association
• APA Corporation, an energy company
• A-P-A Transport Corp., New Jersey
• Adirondack Park Agency, New York
• Agency for the Performing Arts, a talent and literary agency
• Allied Pilots Association, a labor union for American Airlines pilots
• American Payroll Association
• American Philological Association, devoted to Greek and Roman civilization
• American Philosophical Association
• American Planning Association, representing the field of city and regional planning
• American Polygraph Association
• American Poolplayers Association
• American Poultry Association
• American Protective Association, a former anti-Catholic organization
• American Psychiatric Association
• Anglican Province of America, a church
• Austin Peace Academy, an Islamic school in Texas

• Asian Pickleball Association
• Association of Panamerican Athletics
• Austria Press Agency (German: {{lang|de|Austria Presse Agentur}})
• Azerbaijan Press Agency
• NSDAP Office of Foreign Affairs (Außenpolitisches Amt der NSDAP), a Nazi Party organization
• Peruvian Astronomy Association (Spanish: {{lang|es|Asociación Peruana de Astronomía}}), in Peru

• Apa (footballer) (born 2000), Spanish footballer
• Apa of Slavonia, 12th-century Hungarian noble
• Apa Sherpa, a Nepali Sherpa and famous Mt. Everest mountaineer
• KJ Apa (born 1997), New Zealand actor

• Apa, Acıpayam
• Upu, a historic region surrounding Damascus (alternative transliteration)
• The Hong Kong Academy for Performing Arts

• Apache Railway, Arizona, U.S. (by reporting mark)
• Anderson Preparatory Academy, a school in Indiana, United States
• Centennial Airport, Colorado, United States (by IATA code)

• Antarctic Protected Area, several types of zone on Antarctica
• Apa, Nigeria, a local government area in Benue
• Apa, Satu Mare, a commune in Romania

• Apa (ship), an Amazonas-class corvette of the Brazilian Navy
• Advance provisioning allowance
• A retired US Navy hull classification symbol: Attack transport (APA)

• Aldosterone-producing adenoma
• All points addressable
• Amplified piezoelectric actuator
• Atypical polypoid adenomyoma
• Apa, a type of Bronze Age sword named after the Romanian village

• Apa, Coptic form of Ab (Semitic)
• Amateur press association, any group of people who self-publish material among themselves
• American pale ale
• Antarctic Protected Area, several types of place on Antarctica
• Asian Pacific American
• Asset purchase agreement
• Australian Postgraduate Awards

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