| Abbreviation | Definition |
|---|---|
| HSL | High Seat Ltd |
| HSMC | Human Services Management Corporation |
| HSMT | Health and Safety Management Team |
| HSMT | HealthStar Medical Technologies |
| HSP | Healthcare Staffing Professionals |
| HSPI | Historic South Park Inc |
| HSPPL | Hema Sri Power Projects Ltd |
| HSPPL | Himachal Sorang Power Private Ltd |
| HSPPL | Himachal Sorang Power Pvt Ltd |
| HSPPL | Honda Siel Power Products Ltd |
| HSRC | High Speed Rail Corporation |
| HSRI | Health Special Risk Inc |
| HSS | Hire Sales and Service |
| HSS | Huntington Surf and Sport |
| HSSI | Hamilton Scenic Specialty Inc |
| HSSI | Hancock Sigma Sensing Inc |
| HSSI | Homeland Security Solutions Inc |
| HSSI | Hotel Sustainability Solutions Inc |
| HSSI | Hybrid Social Solutions Inc |
| HSSK | Hill, Schwartz, Spilker, Keller, L.L.C. |