| Abbreviation | Definition |
|---|---|
| HEEP | Hillside Environmental Education Park |
| HEFS | Hazard Evaluation and Field Studies |
| HEI | Human Environmental Interaction |
| HEL | Highly Erodible Land |
| HELP | Halewood Environmental Land Protection |
| HELP | Hollingsworth Ecology Landscape Project |
| HELP | Hydrologic Evaluation of Landfill Performance |
| HELP | Hydrology for Environment Life and People |
| HEP | Habitat Evaluation Procedures |
| HEQ | High Environmental Quality |
| HERA | Human and Environmental Risk Assessment |
| HERCA | Heads of European Radiological protection Competent Authorities |
| HERO | Health and Environmental Research Online |
| HERO | Health Environmental Research Online |
| HERO | Health Equipment Recycling Organization |
| HERS | Home Energy Rating System |
| HERT | Hazardous Environmental Response Team |
| HESCO | Himalayan Environmental Studies and Conservation Organization |
| HESP | Haitian Environmental Support Program |
| HET | Health and Environmental Tracker |