| Abbreviation | Definition |
|---|---|
| APNMAC | AIDS Programs of the National Minority Aids Council |
| APO | Asian Productivity Organisation |
| APOPO | Anti-Persoonsmijnen Ontmijnende Product Ontwikkeling |
| APPA | American Public Power Association |
| APPC | Asia Pacific Philanthropy Consortium |
| APPGAW | All Party Parliamentary Group for Animal Welfare |
| APPL | Association of Partners for Public Lands |
| APPRO | Afghanistan Public Policy Research Organization |
| APPT | Association des Personnes de Petite Taille |
| APRS | Association for the Protection of Rural Scotland |
| APS | American Pain Society |
| APS | Association for Practical Shooting |
| APS | Australian Psychological Society |
| APT | Association for Preservation Technology |
| APT | Azim Premji Trust |
| APTA | American Physical Therapy Association |
| APTA | American Polarity Therapy Association |
| APTB | A Place To Be |
| APTD | Aid to the Permanently and Totally Disabled |
| APTF | American Public Transportation Foundation |