| Abbreviation | Definition |
|---|---|
| HERF | Hazards of Electromagnetic Radiation to Fuels |
| HERMS | Human Engineering, Reliability, Maintainability, Safety |
| HERO | Electromagnetic Radiation Hazards |
| HERO | Hazards of Electromagnetic Radiation to Ordnance |
| HERO | Helicopter Emergency Rescue Operation |
| HEROS | German Command and Control System |
| HERP | Hazards of Electromagnetic Radiation to Personnel |
| HET | Heavy Equipment Transport |
| HET | Heavy Equipment Transporter |
| HET | Human Intelligence (HUMINT) Exploitation Team |
| HETS | Heavy Equipment Transporter System |
| HEU | Highly Enriched Uranium |
| HEWSweb | Humanitarian Early Warning Service |
| HF | Heavy Fragments |
| HF | High Frequency |
| HF | Human Factors |
| HFDF | High Frequency Direction Finding |
| HFDF | High-Frequency Direction Finding |
| HFDF-R | High Frequency Direction Finding - Rear |
| HFE | Heavy Fuel Engine |