GSSR
| Acronym | Definition |
|---|---|
| GSSR | Georgian Soviet Socialist Republic |
| GSSR | Goldstone Solar System Radar (US NASA) |
| GSSR | Graduate School for Social Research (Polish Academy of Sciences; Warsaw, Poland) |
| GSSR | General Society, Sons of the Revolution |
| GSSR | German Signal Search Ring (radio) |
| GSSR | Global Software Solutions & Resources (Herndon, VA) |