| HSSC | Harayana Staff Selection Commission 
| Others |
| HSSC | Harmonised System of Survey and Certification
| Others |
| HSSC | Harrisburg Shetland Sheepdog Club
| Others |
| HSSC | Haryana Staff Selection Commission
| Others |
| HSSC | Haryana State Selection Commission
| Others |
| HSSC | Hawaii State Student Council
| Others |
| HSSC | Health Sciences Simulation Center
| Others |
| HSSC | Health Sciences South Carolina
| Others |
| HSSC | Health Sciences Students Council
| Others |
| HSSC | Healthcare Sector Skill Council
| Others |
| HSSC | Heating Sweating Spontaneous Combustion
| Others |
| HSSC | Hereditarily Super Second Countable
| Others |
| HSSC | Hierarchical Spatial Spectral Correlation
| Others |
| HSSC | High School Summer College
| Others |
| HSSC | Higher Secondary School Certificate
| Others |
| HSSC | HIV Screening Standard Care
| Others |
| HSSC | Honda Shared Service Centre
| Others |
| HSSC | Houston Sports and Social Club
| Others |
| HSSC | Humane Society of Sarasota County
| Others |
| HSSC | Humane Society of Scott County
| Others |
| HSSC | Humane Society of Summit County
| Others |
| HSSC | Humane Society Sarasota County
| Others |
| HSSC | Humanities and Social Studies Center
| Others |
| HSSC | Humanities and Social Studies Complex
| Others |
| HSSC | Hydrographic Services and Standards Committee
| Others |
| HSSC | Hythe and Saltwood Sailing Club
| Others |