| Abbreviation | Definition |
|---|---|
| GACA | Governor's Advisory Council on Aging |
| GAIC | Georgia Afterschool Investment Council |
| GAMC | General Assembly Mission Council |
| GAMC | Georgia Automatic Merchandising Council's |
| GBC | Graduate Business Council |
| GBC | green building councils |
| GBC | Green Burial Council |
| GBCA | Green Building Council of Australia |
| GBCB | Green Building Council Brasil |
| GBCE | Green Building Council España |
| GBCGC | Green Building Council of Greater Columbia |
| GBCI | Green Building Council India |
| GBCM | Green Building Council of Mauritius |
| GBCN | Green Building Council of Namibia |
| GBCOA | Greater Boston Council on Alcoholism |
| GBDC | Ghana Book Development Council |
| GBHC | Global Breadfruit Heritage Council |
| GBIC | Girls Brigade International Council |
| GBLC | Greater Boston Labor Council |
| GBPC | Global Business Policy Council |