| Abbreviation | Definition |
|---|---|
| HSE | Headquarters Support Element |
| HSE | HUMINT (HUMan INTelligence) Support Element |
| HSEP | Hospital Surgical Expansion Package (USAF) |
| HSI | High Speed Interceptor |
| HSI | Human Systems Integration |
| HSI | Hyper-Spectral Imagery |
| HSIP | Human System Integration Plan |
| HSLS | Health Service Logistic Support |
| HSM | Humanitarian Service Medal |
| HSOC | Home Station Operations Center |
| HSOC | Homeland Security Operations Center |
| HSP | High Speed Processor |
| HSPD | Homeland Security Presidential Directive |
| HSPR | High Speed Pulse Restorer |
| HSS | Health Service Support |
| HSS | Helmet Sight System |
| HSS | Hunter Sensor Suite |
| HSS | Hunter Sensor System |
| HSSDB | High Speed Serial Data Buffer |
| HSSW | High Speed Strike Weapon |