| 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) |