| Abbreviation | Definition |
|---|---|
| AOWA | Alabama Onsite Wastewater Association |
| AP | Approved Permits |
| APA | Administrative Procedures Act |
| APAC | Arkansas Procurement Assistance Center |
| APAC | Arkansas Public Administration Consortium |
| APC | All Progressive Congress |
| APCC | Alien Poverty Custodian Community |
| APHIS | Animal and Public Health Information System (N.I.) |
| APNR | Automatic Plate Number Recognition |
| APOC | Appointed Personnel Organization Council |
| APOD | Annual Property Operating Data |
| APPSC | Andhra Pradesh Public Service Commission |
| APS | Arizona Public Service |
| APTRA | Administrative Procedure and Texas Register Act |
| AQSG | Air Quality Steering Group |
| ARB | Air Resources Board |
| ARC | Auckland Regional Council |
| ARCH | Affordable And Responsive Community Housing |
| ARCH | Assistance To Residents Of County Homes |
| ARCHE | Alberta Research Centre for Health Evidence |