| Abbreviation | Definition |
|---|---|
| NPHA | Non Profit Housing Association |
| NPHA | Non Profit Humanitarian Assistance |
| NPHCO | NonProfit HealthCare Organization |
| NPI | National Preservation Institute |
| NPI | North Pole Institute |
| NPIC | National Perinatal Information Center |
| NPIC | Non-Profit Industrial Complex |
| NPNI | Natural Parents Network of Ireland |
| NPO | Non Profit Organization |
| NPPA | No Parole Peltier Association |
| NPSF | National Patient Safety Foundation |
| NPSS | Nature Photographic Society, Singapore |
| NPSS | Northeast Product Safety Society |
| NPT | National Park Trust |
| NPT | National Philanthropic Trust |
| NPTC | National Patient Travel Center |
| NPVA | National Participating Voluntary Agency |
| NPW | Non-Profit Work |
| NPWF | National Partnership for Women and Families |
| NQA | National Quilting Association |