| Acronym | Definition |
|---|
| GSSC | Gauteng Shared Service Centre (South Africa) |
| GSSC | Girl Scouts of Suffolk County (Long Island, New York) |
| GSSC | Guelph Synchronized Swim Club (Canada) |
| GSSC | GLAST Science Support Center (NASA) |
| GSSC | General Security Services Corporation (Bloomington, MN) |
| GSSC | Global South Steering Committee (various organizations) |
| GSSC | Genesee Star Soccer Club |
| GSSC | Gulf States Shipbuilders Consortium (est. 2006; Mobile, AL) |
| GSSC | Global Shared Service Centre (Malaysia) |
| GSSC | German Shepherd Schutzhund Club (dog training group; various locations) |
| GSSC | General Support Services Contractor |
| GSSC | Girl Scouts Susitna Council (Anchorage, AK) |
| GSSC | Glory Shed Supporters Club (Western Australian soccer fan club) |
| GSSC | Global SATCOM (Satellite Communications) Support Center (US DoD) |