| Abbreviation | Definition |
|---|---|
| HPND | Historical Permission Notice and Disclaimer |
| HPO | History Projection Operator |
| HPS | History and Philosophy of Science |
| HPSM | History and Philosophy of Science and Medicine |
| HR | Historical Research |
| HRA | Historical Records of Australia |
| HRB | Historical Resources Board |
| HRDM | Historical Relational Data Model |
| HRDP | Historical Resource Development Program |
| HRE | History Research Environment |
| HRIA | Historical Resources Impact Assessments |
| HRR | History Records Register |
| HRRP | Historical Ratings Research Package |
| HRST | History of Recent Science and |
| HRST | History of Recent Science and Technology |
| HRV | Historical Range and Variability |
| HSCM | Historical Semantics Corpus Management |
| HSF | Historical Statistics Facility |
| HSML | History of Science and Medicine Library |
| HSP | Historical Service Performance |