| Abbreviation | Definition |
|---|---|
| NGT | NASA Ground Terminal |
| NGTG | National Guard Tuition Grant |
| NGU | Never Give Up |
| NGWS | New Generation Weapon System |
| NGWS | Next Generation Weapon System |
| NH | Nato Helicopter |
| NH | Nuclear Hardened |
| NH | Nuke Hazard |
| NHCS | Nonhostile Casualty |
| NHOM | Northwood Headquarters Officers Mess |
| NHQ | Naval HeadQuarters |
| NHQ | Not High Quality |
| NHRPP | Navy Human Research Protections Program |
| NHRTC | National HUMINT (HUMan INTelligence) Requirements Tasking Center |
| NHT | Now Hear This |
| NI | National Identification (Number) |
| NI | Native Infantry |
| NI | Naval Interdiction |
| NI | New Information |
| NI | Non Inferiority |