| Abbreviation | Definition |
|---|---|
| NHBW | National Hook-up of Black Women |
| NHCI | National Health Council, Inc. |
| NHF | National Headache Foundation |
| NHF | National Hemophilia Foundation |
| NHF | National Heritage Foundation |
| NHF | Naval Historical Foundation |
| NHI | National Hispanic Institute |
| NHI | New Hope International |
| NHLI | National Hispana Leadership Institute |
| NHLP | National Housing Law Project |
| NHLT | New Hartford Land Trust |
| NHLT | North Haven Land Trust |
| NHM | New Horizons Ministries |
| NHO | Nonprofit Healthcare Organization |
| NHPCA | Nebraska Hospice and Palliative Care Association |
| NHPCO | National Hospice and Palliative Care Organization |
| NHUBW | National Hook- Up of Black Women |
| NHUBW | National Hook-Up of Black Women |
| NHYF | New Horizons Youth Foundation |
| NIA | National Infertility Association |