| APDA | Academic Placement Data and Analysis 
| Others |
| APDA | Adult Patent Ductus Arteriosus
| Others |
| APDA | Adult Psychopathology and Disorders of Aging
| Others |
| APDA | Alabama Pediatric Dental Associates
| Others |
| APDA | All Pakistan Danger Association
| Others |
| APDA | American Parkinson Disease Association
| Others |
| APDA | American Parliamentary Debate Association
| Others |
| APDA | American Power Dispatchers Association
| Others |
| APDA | Apple Programmers and Developers Association
| Others |
| APDA | Appliance Parts Distributors Association
| Others |
| APDA | Application Driven Architecture
| Others |
| APDA | Arizona Public Defenders Association
| Others |
| APDA | Astronomical Photographic Data Archive
| Others |
| APDA | Auto Physical Damage Appraiser
| Others |