| Acronym | Definition |
|---|
| HCSS | High Capacity Storage System |
| HCSS | High Capacity Storage System (Novell) |
| HCSS | Hague Centre for Strategic Studies (est. 2007; Netherlands) |
| HCSS | Heavy Construction Systems Specialists, Inc. (est. 1986; Houston, TX) |
| HCSS | High Capacity Stacker Stapler (Xerox) |
| HCSS | Hypercompact Stellar System (astrophysics) |
| HCSS | Hypersensitive Carotid Sinus Syndrome (medical disorder) |
| HCSS | Hunter College School of Social Work (New York) |
| HCSS | Home and Community Support Staff (Albany, NY) |
