| Abbreviation | Definition |
|---|---|
| AAA | All Ages and Abilities |
| AACP | Assam Agricultural Competitiveness Project |
| AACPO | Addis Ababa City Planning Office |
| ABPB | Activity Based Planning and Budgeting |
| ACP | Advance Care Planning |
| ACPC | Annual Club Planning Conference |
| ACPF | Agriculture Conservation Planning Framework |
| ACPG | Alpine Community Planning Group |
| ACPS | Alabama Career Planning System |
| ACPT | Automated Collection Planning Tool |
| ACSP | Association of Collegiate Schools of Planning |
| ADAPT | Adaptation Database and Planning Tool |
| ADP | Annual Development Programme |
| ADPIE | Assessment Diagnosis Planning Implementation and Evaluation |
| ADPIE | Assessment Diagnosis Planning Implementation Evaluation |
| ADPP | Agricultural Drainage Planning Program |
| ADPS | Advanced Distribution Planning System |
| ADTP | Anthony Daintith Town Planning |
| AE | Analogous Estimate |
| AFIP | Anglian Financial Investment Planning |