Apo

• 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 • , 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 • Audio Processing Object • 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 == See also ==