| Acronym | Definition |
|---|
| APPA | American Public Power Association |
| APPA | American Public Power Association (Washington, DC) |
| APPA | American Pet Products Association (Greenwich, CT) |
| APPA | American Probation and Parole Association |
| APPA | Association of Higher Education Facilities Officers |
| APPA | Antitrust Procedures and Penalties Act |
| APPA | Association of Physical Plant Administrators |
| APPA | Association pour la Prévention de la Pollution Atmosphérique (French: Association for the Prevention of Air Pollution) |
| APPA | Appalachian National Scenic Trail (US National Park Service) |
| APPA | Action for Peace through Prayer and Aid |
| APPA | African Petroleum Producers' Association |
| APPA | American Psychopathological Association |
| APPA | American Professional Practice Association |
| APPA | Antigua Planned Parenthood Association (International Planned Parenthood Federation) |
| APPA | Alberta Professional Photographers Association (Canada) |
| APPA | Association of Philippine Physicians in America |
| APPA | Art in Public Places Advisory (Los Alamos, NM) |
| APPA | Andhra Pradesh Police Academy (Andhra Pradesh State, India) |
| APPA | American Paintball Players Association |
| APPA | Alabama Peanut Producers Association |
| APPA | Anti Plug Pullers Association (gaming) |
| APPA | Arkansas Pork Producers Association |
| APPA | Atlantic Professional Photographers Association |
| APPA | American Power Plant Association |