| Abbreviation | Definition |
|---|---|
| HM | Hazardous Materials |
| HMAC | Hazardous Materials Advisory Council |
| HMIS | Hazardous Materials Information System |
| HMMV | High Mobility Multipurpose Vehicle |
| HMMWV | High Mobility Multi Wheeled Vehicle |
| HMMWV | Highly Mobile Modular Wheeled Vehicles |
| HMMWV | Highly Mobile Multi Wheeled Vehicle |
| HMMWV | Hmmwvhigh Mobility Multipurpose Wheeled Vehicle |
| HMR | Hazardous Materials Regulations |
| HMR | Hornady Magnum Rimfire |
| HMR | Hyderabad Metro Rail |
| HMS | Hazardous Materials Safety |
| HMTA | Hazardous Materials Transportation Act |
| HMTUSA | Hazardous Materials Transportation Uniform Safety Act of 1990 |
| HMU | Height Monitoring Unit |
| HMV | Heavy Motor Vehicle |
| HMV | High Mobility Vehicle |
| HMVO | Habitual Motor Vehicle Offender |
| HND | Highways for National Defense |
| HNL | Honolulu International Airport |