| APSA | Aboveground Petroleum Storage Act 
| Others |
| APSA | Accesorii Piese de Schimb Auto
| Others |
| APSA | Adirondack Powder Skier Association
| Others |
| APSA | African Peace and Security Architecture
| Others |
| APSA | Airline Pilots Security Alliance
| Others |
| APSA | All Peoples' Sports Association
| Others |
| APSA | Alto Palermo S A
| Others |
| APSA | Alto Palermo S A ADR
| Others |
| APSA | Alto Palermo S.A. an
| Others |
| APSA | Alto Palermo SA ADR
| Others |
| APSA | American Pediatric Surgical Association
| Others |
| APSA | American Physician Scientists Association
| Others |
| APSA | American Political Science Association
| Others |
| APSA | American Portuguese Studies Association
| Others |
| APSA | Americans Promoting Study Abroad
| Others |
| APSA | Arizona Private School Association
| Others |
| APSA | Arizona Process Servers Association
| Others |
| APSA | Asia and Pacific Seed Association
| Others |
| APSA | Asia Pacific Screen Awards
| Others |
| APSA | Asia Pacific Seed Association
| Others |
| APSA | Asia Pacific Seeds Association
| Others |
| APSA | Asia Pacific Sociological Association
| Others |
| APSA | Asian Pacific Student Alliance
| Others |
| APSA | Asian Pacific Student Association
| Others |
| APSA | Asian Planning Schools Association
| Others |
| APSA | Asociatia Pentru Promovarea Sigurantei Auto
| Others |
| APSA | Association of Professional Security Agencies
| Others |
| APSA | Association of Professionals in Student Affairs
| Others |
| APSA | Australian Political Studies Association
| Others |
| APSA | Australian Pro Street Association
| Others |
| APSA | Automotive Parts and Service Alliance
| Others |
| APSA | Automotive Parts and Service Association
| Others |
| APSA | Automotive Parts and Services Association
| Others |
| APSA | Automotive Plastics Sa
| Others |
| APSA | Awake People For Social Activities
| Others |
| APSA | C antistreplase
| Others |