| HISS | Hanyang International Summer School 
| Others |
| HISS | Highland Integrated Surveillance Systems
| Others |
| HISS | Highway Intelligent Space System
| Others |
| HISS | Holistic Inventory of Stimulus Sensitivities
| Others |
| HISS | Home For Insanely Sinister Slytherins
| Others |
| HISS | Honda Ignition Security System
| Others |
| HISS | Honda Intelligent Security System
| Others |
| HISS | Hospital Infection Standardized Surveillance
| Others |
| HISS | Hospital Information Support Systems
| Others |
| HISS | Hospital-acquired Infections Surveillance System
| Others |
| HISS | Huddersfield Immersive Sound System
| Others |
| HISS | Human Interface Supervision System
| Others |