| Abbreviation | Definition |
|---|---|
| GLP | Group Leadership Project |
| GLPA | Great Lakes Planetarium Association |
| GLRD | Guided Learning for Role Discovery |
| GLRS | Georgia Learning Resouces System |
| GLRS | Georgia Learning Resources System |
| GLS | Global Learning Summit |
| GLSEN | Gay Lesbian and Straight Education Network |
| GLSEN | Gay Lesbian Straight Education Network |
| GLSEN | Gay Lesbian Straight Educational Network |
| GLSEN | Gay Lesbian Straigt Education Network |
| GLT | Global Learning Term |
| GLUE | Gathering Learning Understanding Experiencing |
| GLUE | Generate, Lure, Upgrade, and Excite |
| GMAC | Graduate Management Admission Council |
| GMAT | Graduate Management Admission Test |
| GMC | Gifted Minds Crew |
| GMD | Grade-school Mindset Dummy |
| GMEA | Georgia Music Education Association |
| GMED | Graduate Medical Education Directory |
| GMEI | Graduate Medical Education Inc |