| Acronym | Definition |
|---|
| GBBI➣Greater Baltimore Bus Initiative |
| GBBI➣Government Broadband Index (Economist Intelligence Unit) |
| GBBI➣Gujarat Brethren Bible Institute (India) |
| GBBI➣Grace Baptist Bible Institute (Ohio) |
| GBBI➣Gist-Brocades/Bio-Intermediair (Dutch fermentation company) |