GSSD
| Acronym | Definition |
|---|---|
| GSSD | Good Spirit School Division (Saskatchewan, Canada) |
| GSSD | Gerstmann-Straussler-Scheinker Disease (prion disease) |
| GSSD | Greensburg Salem School District (Pennsylvania) |
| GSSD | General Support Systems Division |
| GSSD | Ground Systems Support Directorate |
| GSSD | Georgia Soccer Support Division |
| GSSD | Global Strike Support Document |