| Abbreviation | Definition |
|---|---|
| GM | Garrison Morton |
| GM | Garrison & Morton |
| G-M | Garrison Morton |
| G-M | Garrison & Morton |
| GMAIL | Global Main Authentication and Identification Library |
| GML | Mercer University, Law Library (Library Code) |
| GMM | Mercer University, School of Medicine (Library code) |
| GMML | Gladys McArthur Memorial Library |
| GMML | GLYCAM Molecular Modeling Library |
| GMML | GLYCAM Molecular Modelling Library |
| GND | Gemeinsame Normdatei |
| GNDL | Group Neutron Data Library |
| GODORT | Government Documents Round Table |
| GOL | Greenleaf Online Library |
| GOML | Government Oriental Manuscripts Library (India) |
| GPDL | Greater Phoenix Digital Library |
| GPL | Grafton Public Library |
| GPL | Groton Public Library |
| GPLD | Geneva Public Library District |
| GPLS | Georgia Public Library Service |