| Acronym | Definition |
|---|
| HCLS➣Health Care and Life Sciences (Semantic Web Activity) |
| HCLS➣High Cost Loop Support (US FCC) |
| HCLS➣Helicopter Cargo Letdown Spotter |
| HCLS➣Hidalgo County Library System (Texas) |
| HCLS➣Heave-Compensated Landing System (oil industry) |
| HCLS➣Hobart Community Legal Service (Hobart, Australia) |
| HCLS➣Hope and Care for Little Souls (orphan ministry) |