| Abbreviation | Definition |
|---|---|
| HMSW | Hazardous Materials / Solid Waste |
| HMTRI | Hazardous Materials Training and Research Institute |
| HOES | Head of Environmental Services |
| HOL | Harmless to Ozone Layer |
| HOME | Help Our Mother Earth |
| HOP | HOt-work Permit |
| HOPD | Human OverPopulation Disaster |
| HOSTED | Healthy Othello Safer Through Environmental Design |
| HPB | High- Performance Building |
| HPD | Hearing Protection Device |
| HPM | Hazardous Production Materials |
| HPR | High Pressure Rinsing |
| HRDD | Horseshoe Road Drum Dump |
| HREA | High-Risk Erosion Area |
| HREC | Historical Recognized Environmental Condition |
| HREN | Houston Renewable Energy Network |
| HRG | Hennepin Recycling Group |
| HRPG | High Risk Pollution Generating |
| HS | Hungry Soil |
| HSE | Health and Safety Executive |