| Abbreviation | Definition |
|---|---|
| HSSFC | Fédération Canadienne des Sciences Humaines |
| HSSFC | Fédération Canadienne des Sciences Humaines et Sociales |
| HSSFC | Humanities and Social Sciences Federation of Canada |
| HSSJ | Horticultural Society of South Jersey |
| HSSLC | Humane Society of St Lucie County |
| HSSM | Humane Society of South Mississippi |
| HSSR | Historical Society of Santa Rosa |
| HSSS | Hellenic Society for Systemic Studies |
| HSSV | Humane Society Silicon Valley |
| HSSW | Humane Society for Southwest Washington |
| HSSW | Humane Society for SW Washington |
| HSSW | Humane Society of Southern Wisconsin |
| HSTC | Humane Society of the Treasure Coast |
| HSTC | Humane Society of Treasure Coast |
| HSTE | Hawaii Society for Technology in Education |
| HSU | Humane Society of Utah |
| HSUMC | Historical Society of the United Methodist Church |
| HSUS | Humane Society of the United States |
| HSVC | Humane Society of Ventura County |
| HSWA | Humane Society Waterville Area |