| ACPN | Adjusted Composite Pupil Number 
| Others |
| ACPN | Advanced Course on Petri Nets
| Others |
| ACPN | Advances in Cleaner Production Network
| Others |
| ACPN | African Cultural Policy Network
| Others |
| ACPN | Agency Capacity Programs and Nutrition
| Others |
| ACPN | Alcohol Control and Policy Network
| Others |
| ACPN | Allied Congress Party of Nigeria
| Others |
| ACPN | America s Choice Provider Network
| Others |
| ACPN | American Center for Psychiatry and Neurology
| Others |
| ACPN | American Centre for Psychiatry Neurology
| Others |
| ACPN | American College of Professional Neuropsychology
| Others |
| ACPN | Arkansas Church Planting Network
| Others |
| ACPN | Art, Comedy, & Pop-Culture Network
| Others |
| ACPN | Asian Conference of Pediatric Nutrition
| Others |
| ACPN | Asian Congress of Pediatric Nephrology
| Others |
| ACPN | Association Canadienne des Produits Naturels
| Others |
| ACPN | Association of Clinical Pathologists of Nepal
| Others |
| ACPN | Association of Commercial Publishers in Namibia
| Others |
| ACPN | Association of Community Pharmacists of Nigeria
| Others |
| ACPN | Asymptotic Continuous Petri Net
| Others |
| ACPN | Austin Childcare Providers Network
| Others |
| ACPN | Australia China Property Network
| Others |
| ACPN | Automotive Content Professionals Network
| Others |