| Gigantic Brewing Co. | Portland, Oregon |
| Gigantic Brewing Co. / Jolly Pumpkin Artisan Ales | Portland |
| Gilde Brauerei | Hannover, Germany |
| Gilgamesh Brewing | Bandon |
| Ginga Kogen Beer | Tokyo-to Tokyo-shi, Japan |
| Gipsy Hill Brewing Co. | |
| Gizmo Brew Works | Raleigh, NC |
| Glacial Lakes Brewing | New York Mills, Minnesota |
| Glacier Brewhouse | Anchorage, Alaska |
| Glasstown Brewing Company | Millville, New Jersey |
| Glen Ellyn Sports Brew | Glen Ellyn, Illinois |
| Glenmere Brewing Company | Florida, New York |
| Glenwood Canyon Brewing Company | Glenwood Springs, Colorado |
| Gnarly Barley Brewing Company | Hammond |
| Gneiss Brewing Company | Limerick, Maine |