| Abbreviation | Definition |
|---|---|
| HPI | Heifer Project International |
| HPIF | Huffington Post Investigative Fund |
| HPLA | Houston Pipe Liners Association |
| HPNA | Hospice and Palliative Nurses Association |
| HPSSC | Health Physics Society Standards Committee |
| HPV | Hippies Poop Vertically |
| HQAA | Healthcare Quality Association on Accreditation |
| HRAC | Human Resources Association of Calgary |
| HRAC | Human Rights Action Centre (Amnesty international) |
| HRAN | Human Rights for All Now |
| HRC | Human Rights Campaign |
| HRC | Human Rights Committee |
| HRCF | Hampton Roads Charitable Fund |
| HRCF | Human Rights Campaign Foundation |
| HRCI | Human Resource Certification Institute |
| HRCP | Human Rights Commission of Pakistan |
| HRDC | Human Resource Development Centre |
| HRDD | Human Rights Development and Democracy |
| HRDE | Human Rights Documentation Exchange |
| HRDF | Haitian Resource Development Foundation |