| Abbreviation | Definition |
|---|---|
| GISA | Georgia Independent School Association |
| GJ | Game Jockey |
| GJP | Good Job Partner |
| GK | Game Kit |
| GL | Graeco Latin |
| GLAA | Greater Lilburn Athletic Association |
| glbl | Great Lakes Baseball League |
| GLG | Go Leafs Go |
| GLG | Great Lakes Gymnastics |
| GLI | Great Lakes Invitational |
| GLM | Graduated Length Method |
| GLO | Great Lakes Official |
| GLOA | Georgia Lacrosse Officials Association |
| GLOA | Great Lakes Officials Association |
| GLOF | A Bad round of Golf |
| GLOG | Game BLOG |
| GLOSS | Great Lakes Outlaw Sprint Series |
| GLOW | Gorgeous Ladies Of Wrestling |
| GLP | Good Like Partner |
| GLSL | Greater Louisville Soccer League |