| Abbreviation | Definition |
|---|---|
| NHCR | New Horizons Clinical Research |
| NHGRI | National Human Genome Research Institute |
| NHIN | Nationwide Health Information Network |
| NHMR | National Health and Medical Research |
| NHMRC | National Health and Medical Research Centre |
| NHMRC | National Health and Medical Research Council |
| NHMRC | National Health Medical Research Council |
| NHRI | National Health Research Institutes |
| NHRP | National Hazards Research Platform |
| NHRP | National Housing Research Program |
| NHRP | National Hurricane Research Project |
| NIAMAR | National Institute of Aviation Management and Research |
| NIBR | Novartis Institute of Biomedical Research |
| NIBR | Novartis Institutes of BioMedical Research |
| NIBRA | National Integrated Basic Research Agenda |
| NICR | NHS Invasive or Clinical Research |
| NIDCR | National Institute of Dental and Craniofacial Research |
| NIDDK | National Institute of Diabetes and Digestive Kidney diseases |
| NIDR | National Institute for Development and Research |
| NIDS | National Income Dynamics Study |