| Abbreviation | Definition |
|---|---|
| GBA | Global Banking Alliance |
| GBC | Georgia Banking Company |
| GBC | Greenfield Banking Company |
| GBCU | Great Basin Credit Union |
| GBFB | Greater Boston Food Bank's |
| GBG | Great Bank of Guizhou |
| GBIC | German Banking Industry Committee |
| GBLD | Global Banking Law Database |
| GBN | Green Bank Network |
| GBO | Green Bank Observatory |
| GBP | Great British Pound |
| GBPPA | Great British Pounds Per Annum |
| GBTI | Guyana Bank for Trade and Industry |
| gc | gift cheque |
| GC | Grand Central |
| GCB | Georgia Community Bank |
| GCB | Ghana Commercial Bank |
| GCB | Global Consumer Bank |
| GCB | Global Consumer Banking |
| GCB | Granite Community Bank |