| Abbreviation | Definition |
|---|---|
| NGO | Next Generation Office |
| NGO | Next Government Official |
| NGO(s) | nongovernmental organization(s) |
| NGR | National Grid Reference |
| NGTOC | National Geospatial Technical Operations Center |
| NH | National Holiday |
| NH | Non-Hispanic |
| NH | Not Helpful |
| NHAP | National High Altitude Photography |
| NHB | National Honey Board |
| NHCD | National HUMINT (HUMan INTelligence) Collection Directive |
| NHDA | National Housing Data Agreement |
| NHDA | National Housing Development Authority |
| NHDR | National Hospital Discharge Registry |
| NHESP | National Household Education Surveys Program |
| NHI | National Health Insurance |
| NHIC | National Health Insurance Corporation |
| NHIS | National Health Interview Survey |
| NHLBI | National Heart Lung and Blood Institute |
| NHP | National Historical Park |