| Abbreviation | Definition |
|---|---|
| HEIF | Humboldt Energy Independence Fund |
| HEIS | High Energy Ignition System |
| HEIST | High Energy Isotope Spectrometer Telescope |
| HEIU | High Energy Ignition Units |
| HEJC | Harvard Energy Journal Club |
| HELLO | High Energy Laser Light Opportunity |
| HELP | Home Energy Loan Program |
| HELPS | Home Energy Loss Prevention Services |
| HELT | High Energy Low Time |
| HEMC | High Energy Moisture Characteristics |
| HEME | High Efficiency Marine Energy |
| HEMI | High Energy Metals Inc |
| HEMI | High Energy Mexican Inside |
| HEP | High Energy Particle |
| HEP | Holly Energy Partners |
| HEP | Hydro energy production |
| HEPG | High Energy Physics Group |
| HEPP | High Energy Particle Physics |
| HEPPA | High Energy Physics and Particle Astrophysics |
| HER | High Energy Ring |