| Acronym | Definition |
|---|
| APAS | Antiphospholipid Antibody Syndrome |
| APAS | Australian Paint Approval Scheme (Commonwealth Scientific & Industrial Research Organisation; Australia) |
| APAS | Astrophysical Planetary and Atmospheric Sciences |
| APAS | Androgynous Peripheral Assembly System (NASA) |
| APAS | Asian Pacific American Society (New Orleans, LA) |
| APAS | Androgynous Peripheral Attachment System |
| APAS | Aerodynamic Preliminary Analysis System |
| APAS | Allegheny Plateau Audubon Society (Pennsylvania) |
| APAS | Animal Protective Association of Socorro (New Mexico) |
| APAS | Assistant Professor of Aerospace Studies |
| APAS | Automated Pilot Advisory System |
| APAS | Active Passive Aircraft Survivability |
| APAS | Automated Plutonium Assay System |
| APAS | Advanced Passive Array Sonobuoy |
| APAS | Advanced Passive Sensor |
| APAS | All Purpose Accounting System |
| APAS | Automatic Performance Analysis |
| APAS | Analyst Projection Assistance System (US Army) |
| APAS | Andhra Pradesh Administrative Service (India) |