| Rank | Abbreviation | Meaning |
|---|
| ***** | HSTC | Hst Global Inc (OTC Bulletin Board [OTCBB])
| |
| ***** | HSTC | Humane Society of Tuscola County
| |
| ***** | HSTC | Human Services Transportation Coordination
| |
| ***** | HSTC | History of Science and Technology
| |
| ***** | HSTC | Humane Society of the Treasure Coast
| |
| ***** | HSTC | Humane Society of Terrell County
| |
| **** | HSTC | Hi-Shear Technology Corporation
| |
| **** | HSTC | Homeland Security Technology Council
| |
| **** | HSTC | Homeland Security Technology Corporation
| |
| *** | HSTC | Human Services Transportation Committee
| |
| *** | HSTC | Harmonized Sales Tax Credit
| |
| *** | HSTC | Historical Society of Talbot County's
| |
| *** | HSTC | holly springs theatre company
| |
| *** | HSTC | Hamilton Squash & Tennis Club
| |
| ** | HSTC | Hawaii Science & Technology Council
| |
| ** | HSTC | HIGH STREET CORP.
| |
| ** | HSTC | High Speed Thrill Coaster
| |
| ** | HSTC | Herma Shipping and Transport Corporation
| |
| ** | HSTC | Human Smuggling and Trafficking Center
| |
| ** | HSTC | Hub for Speaking Training Castl
| |
| ** | HSTC | Hanoi Securities Trading Centre
| |
| ** | HSTC | human STC
| |
| ** | HSTC | Harvard Spider Type Catalogue
| |
| * | HSTC | Hartford State Technical College
| |
| * | HSTC | HOPE Scholarship Tax Credit
| |