GBBC
| Acronym | Definition |
|---|---|
| GBBC | Great Backyard Bird Count |
| GBBC | Greater Boston Business Council |
| GBBC | Georgia BioBusiness Center |
| GBBC | Grace Bible Baptist Church (various locations) |
| GBBC | Garden Bloggers Book Club (blog) |
| GBBC | Guécélard Basket Ball Club (Guécélard, France) |
| GBBC | German Beer'n'Bike Cup |