AAPP may refer to:
American Association of Psychiatric Pharmacists, a US association of pharmacists Assistance Association for Political Prisoners, an independent non-profit organisation Associação Atlética Ponte Preta, a Brazilian association football club Association for the Advancement of Philosophy and Psychiatry, US Association of Asian Parliaments for Peace Airborne Auxiliary Power Plant, the Royal Air Force designation for Auxiliary Power Unit in Cold War-era aircraft such as the Avro Vulcan