Apo

Apo or APO may refer to:

People, figures, characters

 * Acting Pilot Officer, the lowest commissioned grade in the Royal Air Force
 * Apo, along with Datu, one of the traditional Philippine titles of nobility; meaning "elder"
 * Apo, a god of mountains in Inca mythology

Persons

 * Abdullah Öcalan (born 1949), a founding member of Kurdistan Workers' Party (PKK)
 * Apo Avedissian (born 1990), Armenian-American artist

Places

 * Apache Point Observatory, an observatory in the Sacramento Mountains in Sunspot, New Mexico, United States
 * Apo-eup, an administrative division (eup) in Gimcheon, Gyeongsangbuk-do, central South Korea
 * Apo Island, a volcanic island in the Philippines
 * Apo (island), a coral reef island in the Philippines
 * Lake Apo is a crater lake in Barangay Guinoyoran in the city of Valencia in Bukidnon province in the Philippines
 * Karaš River or Apo, a tributary of the Danube in the Banat region of Serbia and Romania
 * Mount Apo, a stratovolcano on the island of Mindanao in the Philippines
 * Antonio Roldán Betancourt Airport IATA code, Apartadó, Columbia

Music

 * ABS-CBN Philharmonic Orchestra
 * Aldworth Philharmonic Orchestra, the orchestra of Reading Blue Coat School
 * APO Hiking Society, a Filipino singing group
 * Armenian Philharmonic Orchestra
 * Auckland Philharmonia Orchestra

Businesses and organizations

 * African People's Organisation, a political organization for Coloured people in early twentieth century South Africa
 * Alpha Phi Omega, a U.S. service fraternity
 * Alpha Psi Omega, a U.S. honors theatre society
 * Analysis & Policy Observatory (APO) (formerly Australian Policy Online), a digital library of policy and practice resources
 * Apotex, Canadian pharmaceutical company, producer of generic drugs
 * Association for Professional Observers, an association of fisheries observers
 * Außerparlamentarische Opposition, a political protest movement in West Germany during the 1960s and 1970s

Other

 * Acute pulmonary oedema, fluid accumulation on the lungs
 * Apo (drink), an alcoholic beverage of Northeast India
 * Apochromat, a type of photographic or other lens
 * Apoprotein (disambiguation), a protein without its bound cofactor
 * Army Post Office: chiefly U.S. Army and U.S. Air Force postal facilities
 * Authorized Personnel Only, a fictional black ops unit on Alias
 * Alternative Public Offering