| Abbreviation | Definition |
|---|---|
| GKN | Guest, Keen and Nettlefolds (Airbus, Steel company) |
| GKN | Guest, Keen, and Nettlefolds |
| GL | General Lingware |
| GL | Germanischer Lloyd |
| GL | Groupe Lin |
| GL | Guilaran Lines |
| GLAC | Great Lakes Asset Corporation |
| GLB | Great Lakes Brewery |
| GLBC | Great Lakes Brewing Company |
| GLBCW | Global Crossing, LTD. Warrants |
| GLBI | Good Life Broadcasting, Inc. |
| GLC | Government Linked Corporation |
| GLCC | Gas Light and Coke Company |
| GLCC | Good Life China Corp |
| GLCC | Good Life China Corporation |
| GLCC | Great Lakes Championship Company |
| GLCC | Great Lakes Chemical Corporation |
| GLDC | Greater Lockport Development Corporation |
| GLDC | Greene Local Development Corporation |
| GLDC | Griffiss Local Development Corporation |