| Acronym | Definition |
|---|
| NHI | National Health Insurance |
| NHI | National Highway Institute |
| NHI | Nomura Holdings, Inc. (Japan) |
| NHI | National Historical Institute (Philippines) |
| NHI | National Housing Institute |
| NHI | National Holistic Institute |
| NHI | National Health Index (New Zealand) |
| NHI | Nuclear Hydrogen Initiative |
| NHI | National Hispanic Institute |
| NHI | Nebraska Heart Institute (Lincoln, NE) |
| NHI | Natural Heritage Institute |
| NHI | National Homelessness Initiative (Canada) |
| NHI | National Heart Institute |
| NHI | Not Handed In (school assignments) |
| NHI | New Croat Initiative (Bosnia and Herzegovina) |
| NHI | Native Health Initiative (est. 2004) |
| NHI | Nikko Hotels International (Japan) |
| NHI | Newspaper Holdings, Inc. |
| NHI | No Human Involved |
| NHI | Native Host Interface |
| NHI | Never Heard of It |
| NHI | NATO Helicopter Industries |
| NHI | Neighborhood House, Inc. (various locations) |
| NHI | Nitrogen Harvest Index |
| NHI | Nielsen Homevideo Index |
| NHI | Natural Hygiene Incorporated |
