| American Academy of Private Physicians | Academic & Science |
| American Academy on Physician and Patient | Academic & Science |
| American Association of Pain Psychology | Academic & Science |
| Academy Admissions Partner Program | Academic & Science |
| Advances and Applications in Plasma Physics | Academic & Science |
| Australian Association of Pathology Practices | Business |
| American Academy of Pharmaceutical Physicians | Business |
| Alcatel Application Partner Program | Business |
| American Association Of Patients And Providers | Community |
| Association of Asian Parliaments for Peace | Community |
| Assistance Association for Political Prisoners (Burma) | Community |
| Atti della Accademia Peloritana dei Pericolanti | Community |
| Alberta Association of Professional Paralegals | Community |
| Anglo American Project in Pompeii | General |
| Area Alateen Process Person | General |
| Aspiring Assistant Principals Program | General |
| Aspiring Assistant Principal Program | General |
| Anopheline Anti Platelet Protein | General |
| Assisted Appraisal Processing Program | General |
| Airborne Auxiliary Power Plant | General |
| All American Paint Protection | General |
| Associacao Atletica Ponte Preta | General |
| Associate Access and Privacy Professional | General |
| Approximate A Posteriori Probability | General |
| Albireo Antares Pollux and Polaris | General |
| Affirmative Action Planning Process | Governmental |
| American Association of Police Polygraphists | Governmental |
| Alliance for Adolescent Pregnancy Prevention | Governmental |
| Assistance Association for Political Prisoners | Governmental |
| And All Political Prisoners | Governmental |
| American Association of Police | Governmental |
| All Alaska Pediatric Partnership | Medical |
| Association for the Advancement of Philosophy and Psychiatry | Medical |
| Affirmative Action Program Plans | Military and Defence |
| Association of Applied Physicists Pakistan | Physics Related |
| African American Professors Program | Regional |
| African American Political Pundit | Regional |
| African American Partner Program | Regional |
| African American Partnership Program | Regional |
| Australian Antarctic Program Partnership | Regional |
| Atovs and Avhrr Processing Package | Softwares |
| All American Paintball Park | Sports |
| Average All-pig Price | Stock Exchange |
