| APPA | Advanced Personal Property Appraiser 
| Others |
| APPA | African Petroleum Producers Association
| Others |
| APPA | American Paintball Player's Association
| Others |
| APPA | American Paintball Players Association
| Others |
| APPA | American Paintball Players AssociationIn
| Others |
| APPA | American Paper and Pulp Association
| Others |
| APPA | American Pet Products Association
| Others |
| APPA | American Pharmacy Purchasing Alliance
| Others |
| APPA | American Philosophical Practitioners Association
| Others |
| APPA | American Probation and Parole Association
| Others |
| APPA | American Professional Practice Association
| Others |
| APPA | American Public Power Association
| Others |
| APPA | APPIC Psychology Postdoctoral Application
| Others |
| APPA | Appreciative Participatory Planning Action
| Others |
| APPA | Arkansas Professional Photographers Association
| Others |
| APPA | Asia Pacific Pediatric Association
| Others |
| APPA | Asia Pacific Privacy Authorities
| Others |
| APPA | Asia Pacific Publishers Association
| Others |
| APPA | Association of Physical Plant Administrators
| Others |
| APPA | Atlanta Post Polio Association
| Others |
| APPA | Australian Professional Photography Awards
| Others |
| APPA | Authorized Public Purpose Access
| Others |
| APPA | Automated Permeability Plugging Apparatus
| Others |