| Acronym | Definition |
|---|
| GBSC | Galway Bay Sailing Club (Ireland) |
| GBSC | Geraldton Building Services & Cabinets (Australia) |
| GBSC | Green Buildings and Sustainable Cities (Italy) |
| GBSC | Gondolbong Snowboard Club (Vermont) |
| GBSC | Greater Boston Soaring Club (aviation) |
| GBSC | Group of Blocks Start Code |
| GBSC | Global Bondholder Services Corporation (New York, NY) |
| GBSC | Great Britain Ice Hockey Supporters Club |
| GBSC | Global Biologics Supply Chain, LLC |
| GBSC | General Biometric Service and Consulting (Belgium) |
| GBSC | Georgian Bay Sailing Centre (Canada) |